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Synonyms for un sound
adj not well; flimsy

incorrect
illogical
erroneous
unhealthy
defective
insecure
fragile
unsafe
inaccurate
shaky
unstable
insane

unreliable
faulty
unbalanced
ailing
crazed
dangerous
decrepit
delicate
demented
deranged
diseased
fallacious

frail
ill
incongruous
infirm
insubstantial
invalid
lunatic
mad
rickety
specious
unhinged
unsteady

unsubstantial
unwell
weak
wobbly
tottering
false
flawed
in poor health
not solid
unbacked

Antonyms for un sound

rational
valid
honest
reliable
healthy
protected
stable
sane
correct

right
true
reasonable
accurate
just
strong
well
perfect
certain

secure
sure
safe
sound
firm
steady
balanced

Synonyms
adj dangerous, risky

capricious
contingent
dicey
erratic
fluky
hazardous

iffy
incalculable
precarious
problematic
rocky
speculative

ticklish
touchy
tricky
uncertain
unpredictable
unsound

whimsical
problematical
fluctuant

Antonyms

tried
certain

safe
secure

sure
not dangerous

Synonyms
adj stupid; crazy

absurd
asinine
bonkers
cracked
crackers
daffy
demented
deranged
dopey
flaky

foolish
giddy
half-baked
idiotic
inane
insane
lunatic
mad
mental
nuts

nutty
off the wall
ridiculous
screwy
silly
simple
touched
unbalanced
unhinged
unsound

wacky
witless
bedlamite
fried
in the ozone
whacko
out of one’s gourd

Antonyms

brainy
intelligent

understanding
bright

smart

Synonyms
adj broken, not working

injured
impaired
run-down
gone
shot
bent
hurt
down
spoiled
imperfect

kaput
on the blink
on the fritz
unsound
flawed
flubbed
snafued
sunk
busted
blemished

dinged
marred
totaled
beat-up
fouled up
glitched
in need of repair
in poor condition
in smithereens
loused up

messed up
mucked up
no go
out of action
out of kilter
out of whack
screwed up

Antonyms

healthy
mended
OK

repaired
undamaged
working

fixed
perfect
unbroken

Synonyms
adj deteriorated, debilitated, especially as a result of age

infirm
broken-down
run-down
shabby
dilapidated
crippled
frail
flimsy
ramshackle
seedy
rickety

feeble
aged
antiquated
bedraggled
doddering
effete
fragile
haggard
incapacitated
insubstantial
old

senile
shaking
superannuated
tacky
threadbare
tired
unsound
used
wasted
weak
weather-beaten

worn
worn-out
tottering
weakly
creaky
battered
anile
quavering
tumble-down

Antonyms

healthy
sturdy
stable
young

firm
hearty
sound
strong

solid
good
nice
fit

Synonyms
adj broken, not working

damaged
unhealthy
deficient
inadequate
abnormal
unsound

insufficient
faulty
amiss
impaired
imperfect
incomplete

injured
lacking
out of order
poor
sick
unfinished

wanting
flawed
blemished
on the bum
seconds
subnormal

Antonyms

working
adequate
ample
enough
sufficient

excellent
faultless
flawless
perfect
strong

well
sound
unbroken

Synonyms
adj crazy, insane

maniacal
manic
hysterical
unhinged
psychotic
mad
deranged
bananas
bemused

daft
delirious
distracted
distraught
foolish
frenzied
fruity
idiotic
lunatic

maniac
non compos mentis
psycho
psychopathic
unbalanced
unsound
crackbrained
flipped out
in the ozone

nutty as a fruitcake
schitzy
schizoid
unglued
whacko
out of one’s gourd
out of one’s tree

Antonyms

sane
OK
rational

sensible
calm
balanced

reasonable

Synonyms
adj crazy, insane

maniacal
irrational
distracted
unhinged
demented
crazed
unbalanced
displaced
perplexed
disordered

unsettled
nuts
disconcerted
ape
cracked
baked
berserk
delirious
dotty
frantic

frenzied
lunatic
mad
maniac
unsound
bananas
loco
maddened
unscrewed
flipped

disarranged
fried
unzipped
flipped out
schizzo
unglued
whacko

Antonyms

rational
sensible
stable

sane
OK
reasonable

sound
balanced
calm

Synonyms
adj unhealthy

sickly
rotten
infirm
ailing

afflicted
indisposed
infectious
sick

tainted
unsound
unwell
unwholesome

infected

Antonyms

healthy
hearty

nice
fit

Synonyms
adj wrong, incorrect

untrue
inaccurate
spurious
specious
mistaken
unsound

invalid
faulty
misguided
unfounded
amiss
askew

awry
defective
fallacious
inexact
off
false

flawed
all off
all wet
way off
wrong number

Antonyms

honest
real
valid
true
accurate

correct
genuine
precise
right
substantiated

just
sound
strong
well

Synonyms
adj false, wrong

deceptive
delusive
erroneous
fictitious
fishy
fraudulent
illogical
illusory

incorrect
invalid
irrational
mad
misleading
mistaken
off
phony

spurious
unfounded
unreal
unreasonable
unsound
untrue
delusory
sophistic

unreasoned
beguiling
deceiving
deluding
reasonless
sophistical
ungrounded
way off

Antonyms

real
truthful

correct
true

Synonyms
adj wrong, made up

fake
untrue
distorted
mistaken
improper
erroneous
fanciful
untruthful
incorrect
deceitful
invalid
fictitious

bogus
misleading
faulty
inaccurate
spurious
phony
specious
unfounded
dishonest
fraudulent
unreal
apocryphal

delusive
ersatz
fallacious
fishy
illusive
imaginary
inexact
lying
mendacious
sham
trumped up
unsound

counterfactual
beguiling
casuistic
concocted
contrary to fact
cooked-up
deceiving
misrepresentative
off the mark
sophistical

Antonyms

real
truthful
honest
moral
valid
sincere
frank
trustworthy
authentic

factual
known
reliable
genuine
true
faithful
correct
fair
right

sound
open
proven
accurate
actual
precise
substantiated
just
straight

Synonyms
adj not working; incorrect

damaged
erroneous
inaccurate
defective
inadequate
deficient
invalid
broken
insufficient
unreliable
cracked
leaky
incomplete

adulterated
amiss
awry
bad
below par
blamable
debased
distorted
fallacious
fallible
frail
impaired
imperfect

inexact
injured
lame
lemon
maimed
malformed
out of order
rank
sick
tainted
unfit
unsound
weak

wrong
false
flawed
malfunctioning
imprecise
blemished
botched
marred
unretentive
warped

Antonyms

OK
working
valid
honest
reliable
faultless
flawless

adequate
enough
sufficient
ample
fixed
perfect
unbroken

correct
right
true
accurate
complete
sound
strong

Synonyms
adj not strong; light, thin

shaky
decrepit
insubstantial
tacky
rickety
feeble
shallow
gossamer

wobbly
frail
slight
defective
delicate
diaphanous
fragile
gauzy

inadequate
infirm
meager
sheer
slapdash
sleazy
superficial
transparent

unsound
unsubstantial
weak
chiffon
cut-rate
house of cards
papery
rinkydink

Antonyms

healthy
sturdy
convincing
plausible
strong

sound
thick
firm
heavy
solid

substantial
tough
reasonable
serious

Synonyms
adj breakable, dainty

weak
delicate
feeble
frail
brittle

crisp
crumbly
decrepit
fine
flimsy

friable
infirm
insubstantial
slight
unsound

frangible
shivery
weakly
fracturable
shatterable

Antonyms

healthy
durable
unbreakable

firm
strong
able

tough

Synonyms
adj breakable, weak

slim
fragile
slender
sickly
decrepit
thin
infirm
feeble

vulnerable
tender
brittle
flimsy
slight
dainty
delicate
fishy

insubstantial
puny
sad
tenuous
unsound
unsubstantial
wishy-washy
wispy

frangible
fracturable
shatterable
shattery
wimpy

Antonyms

healthy
unbreakable
firm
strong

fat
hearty
solid
sound

rough
tough
heavy
thick

Synonyms
adj dangerous

scary
chancy
difficult

hazardous
perilous
risky

treacherous
uncertain
unhealthy

unsound
wicked
jeopardous

Antonyms

hairless
bald

clean
calm

safe
balding

Synonyms
adj dangerous, unpredictable

uncertain
unhealthy
unsafe
precarious
unsound

risky
perilous
dicey
difficult
chancy

hairy
haphazard
hot
insecure
touchy

venturesome
wicked
parlous

Antonyms

stable
guarded
predictable
protected

certain
definite
secure
sure

strong
well
safe

Synonyms
adj confused

murky
unclear
uncertain
vague
nebulous

dazed
dizzy
dreamy
groggy
ill-defined

indefinite
indistinct
muddled
obscure
unintelligible

unsound
whirling
stuporous
tranced

Antonyms

explained
clear
certain
definite

sure
sunny
distinct
unconfused

uncloudy
unhazy

Synonyms
adj false, artificial

flimsy
cynical
deceitful

faithless
hypocritical
insincere

treacherous
unsound
weak

Antonyms

convex
meaningful
sincere
frank
honest
real

truthful
full
raised
solid
high
light

soft
earnest
substantial
genuine

Synonyms
adj not making sense

incorrect
unscientific
irrational
senseless
unreasonable
preposterous
groundless
untenable
absurd
implausible
irrelevant

inconsistent
cockeyed
fallacious
fatuous
faulty
hollow
inconclusive
incongruous
invalid
mad
meaningless

nutty
off the wall
screwy
specious
spurious
unconnected
unsound
unsubstantial
wacky
inconsequent
sophistic

unproved
false
casuistic
not following
self-contradictory
sophistical
without basis
without foundation

Antonyms

logical
rational
sensible

wise
meaningful
correct

right
true
reasonable

Synonyms
adj injured, faulty

damaged
harmed
defective
debilitated

hurt
down
broken
spoiled

imperfect
kaput
on the blink
on the fritz

unsound
flawed
busted
marred

Antonyms

OK
healthy

perfect
unbroken

happy
strong

Synonyms
adj flawed

rudimentary
inexact
sketchy
immature
incomplete
limited
junk
partial
garbage

dud
low
sick
lemon
minus
amiss
below par
broken
damaged

defective
deficient
faulty
impaired
injured
patchy
two-bit
undeveloped
unfinished

unsound
vicious
schlocky
warped
bottom-of-barrel
disfigured
few bugs
marred

Antonyms

developed
moral
healthy
excellent
faultless

unblemished
unflawed
complete
finished
happy

well
perfect
pure

Synonyms
adj erroneous

incorrect
untrue
defective
mistaken
wrong
unreliable
faulty

careless
counterfactual
discrepant
fallacious
inexact
off
off base

out
specious
unfaithful
unsound
wide
wild
false

imprecise
all wet
in error
way-off
doesn’t wash

Antonyms

honest
reliable
correct
right

true
accurate
precise
just

perfect
sound

Synonyms
adj wrong

erroneous
inaccurate
inappropriate
mistaken
improper
unsound

untrue
unreliable
faulty
inexact
out
specious

unseemly
unsuitable
wide of the mark
counterfactual
false
flawed

imprecise
not trustworthy
unfitting
way off
wrong number

Antonyms

valid
honest
reliable
appropriate
fitting

suitable
correct
right
true
accurate

precise
just
proper
sound
strong

Synonyms
adj sick, weak

insecure
ill
anemic
decrepit
unstable
frail
ailing

feeble
debilitated
delicate
failing
faint
flimsy
fragile

halting
irresolute
lame
shaky
unsound
unsubstantial
vacillating

wavering
wobbly
anile
enfeebled
faltering
laid low
sensile

Antonyms

healthy
robust

sound
strong

firm
hearty

Synonyms
adj dangerous, precarious

shaky
unstable
wobbly
frail
unreliable
immature
vulnerable

unsafe
defenseless
exposed
hazardous
insubstantial
loose
perilous

rickety
rocky
unguarded
unprotected
unsound
unsteady
vacillating

wavering
weak
fluctuant
open to attack
rootless
unshielded

Antonyms

stable
confident
guarded
protected
firm

steady
strong
certain
secure
sure

safe
sound
unshaky

Synonyms
adj weak, imaginary

illusory
flimsy
unreal
fanciful
tenuous
puny
unsubstantial
aerial

airy
chimerical
decrepit
ephemeral
feeble
fly-by-night
fragile
frail

idle
immaterial
incorporeal
infirm
intangible
metaphysical
petty
poor

slender
slight
thin
unsound
imponderable
false
too little too late

Antonyms

real
genuine

strong
substantial

thick
serious

Synonyms
adj worthless; unfounded

baseless
unscientific
untrue
irrational
inoperative
unreasonable

unsound
null
void
bad
wrong
fallacious

illogical
mad
nugatory
null and void
sophistic
unreasoned

false
ill-founded
not binding
not working
reasonless

Antonyms

honest
valid
logical
sensible
stable

OK
worthwhile
worthy
healthy
true

reasonable
sound
good
right
well

Synonyms
adj illogical, senseless

insane
crazy
stupid
incoherent
unreasonable
preposterous
unsound
wrong
ridiculous
absurd
unwise

foolish
aberrant
wild
loony
raving
silly
invalid
brainless
delirious
demented
disconnected

disjointed
distraught
fallacious
flaky
injudicious
mad
mindless
nonsensical
nutty
specious
unstable

unthinking
wacky
freaky
kooky
sophistic
cockamamie
off-the-wall
reasonless
unreasoning

Antonyms

rational
sane
sensible
logical
wise
reflective

stable
balanced
reasonable
sound
well
realistic

responsible
smart
serious
thoughtful

Synonyms
adj flimsy

cheap
defective
insubstantial

makeshift
ramshackle
rickety

shoddy
slipshod
unsound

unsubstantial
jerry-rigged
junky

Synonyms
adj crazy, mad

maniacal
crazed
bananas
maniac
psychotic
stupid
zany
absurd
irrational

baked
balmy
bonkers
cracked
daft
demented
deranged
flaky
foolish

idiotic
insane
nonsensical
nutty
preposterous
screwy
unsound
dippy
kooky

loco
whacko
schizoid
fried
flipped out
freaked out
psyched out

Antonyms

logical
rational

sensible
healthy

sane
reasonable

Synonyms
adj crazy, insane

fantastic
frenzied
delirious
kooky
nutty
demented
frantic
absurd
foolish
psychotic
aberrant

bananas
batty
crazed
cuckoo
daft
deranged
distracted
foolhardy
frenetic
illogical
imprudent

invalid
irrational
loony
ludicrous
lunatic
mental
non compos mentis
nonsensical
preposterous
rabid
raving

senseless
unbalanced
unhinged
unreasonable
unsafe
unsound
unstable
wacky
of unsound mind
off one’s rocker
out of one’s mind

Antonyms

collected
sane
rational
sensible
wise

OK
disenchanted
calm
balanced
reasonable

sound
cheered
happy
unenthusiastic

Synonyms
adj wrong, incorrect

erroneous
inaccurate
inappropriate
confused
misled
untrue
faulty
misguided
unfounded
illogical

deluded
confounded
misunderstanding
warranted
fooled
deceived
at fault
fallacious
ill-advised
off base

unadvised
unreal
unsound
false
tricked
misconstrued
misjudging
duped
misinformed
misinterpreting

all wet
barking up wrong tree
confused with
off track
under wrong impression
way off
wide of mark
wrong number
wrongly identified

Antonyms

valid
honest
correct
right

true
accurate
substantiated
exact

fair
just
precise
sound

Synonyms
adj gloomy, nasty, sickly

pessimistic
melancholy
macabre
unnatural
ghoulish
ghastly
gruesome
grim
aberrant

abnormal
ailing
dark
deadly
depressed
despondent
diseased
dreadful
frightful

grisly
hideous
irascible
malignant
monstrous
moody
saturnine
sick
somber

sullen
unhealthy
unsound
unusual
unwholesome
horrid
brooding
infected

Antonyms

cheerful
joyful
pleasant

healthy
pleased
happy

sound

Synonyms
adj dangerous

uncertain
touchy
threatening
hazardous
shaky
treacherous
precarious
unstable

delicate
ticklish
rugged
dicey
risky
chancy
exposed
hairy

insecure
loaded
unhealthy
unsafe
unsound
unsteady
unsure
vulnerable

wicked
dynamite
Russian roulette
on thin ice
playing with fire
touch and go

Antonyms

stable
OK
certain
definite
secure

sure
calm
nice
safe
firm

steady
strong
easy

Synonyms
adj small, insignificant

paltry
measly
inconsequential
tiny
frail
trivial
feeble
diminutive
fragile
inferior
infirm

little
minor
niggling
nothing
peanut
petty
picayune
piddling
runt
stunted
trifling

two-bit
underfed
undeveloped
unsound
unsubstantial
weak
wee
worthless
zero
zilch
weakly

undersized
half-pint
peewee
pint-sized
shrimp
small time
small-fry
unconsequential

Antonyms

giant
huge
large

important
significant
strong

big

Synonyms
adj dangerous

tricky
uncertain
unhealthy
unsound
treacherous
hazardous
unsafe
precarious
perilous
sensitive

delicate
speculative
dicey
chancy
endangered
hairy
iffy
insecure
long shot
out on a limb

rocky
ticklish
touch-and-go
touchy
venturesome
wicked
wide-open
jeopardous
fraught with danger
going for broke

hanging by a thread
not a prayer
off the deep end
on slippery ground
on the spot
on thin ice
playing with fire

Antonyms

honest
healthy
stable
harmless
protected

certain
definite
secure
sure
strong

well
safe
insensitive
assured

Synonyms
adj decayed, decaying

putrid
rotting
disgusting
rancid
noxious
sour
spoiled
corrupt
moldy
stale
bad
crumbling

fetid
foul
gross
loathsome
loud
mephitic
noisome
offensive
rank
stinking
strong
tainted

touched
unsound
overripe
bad-smelling
corroded
crumbled
decomposed
decomposing
disintegrated
disintegrating
fecal
feculent

festering
infected
moldering
perished
polluted
purulent
pustular
putrescent
putrified
smelling

Antonyms

perfumed
pleasant
helpful
wholesome
honest
moral

trustworthy
kind
fresh
sweet
good
pure

new
undecayed
decent
uncorrupt
nice
superior

Synonyms
adj despicable, inferior, bad

unpleasant
unlucky
lousy
diseased
sour
crummy
amiss
nasty
dirty
base
below par

bum
contemptible
defective
deplorable
disagreeable
disappointing
dissatisfactory
filthy
impaired
inadequate
injured

mean
poor
punk
regrettable
rough
scurrilous
shaky
sorry
substandard
unacceptable
unfortunate

unhappy
unsatisfactory
unsound
vile
wasted
wicked
withering
wrong
displeasing
low-grade
bruised

Antonyms

pleasant
pleasing
wonderful
magnificent
friendly
moral
honest

trustworthy
kind
agreeable
good
great
happy
clean

fresh
new
undecayed
decent
uncorrupt
nice
superior

Synonyms
adj silly, meaningless

ludicrous
stupid
illogical
insignificant
incongruous
unreasonable
ridiculous
absurd
mindless
pointless

irrational
asinine
batty
crazy
daft
double talk
fatuous
flaky
foolish
idiotic

inane
inconsistent
mad
moronic
nonsensical
nutty
purposeless
simple
trivial
unimportant

unintelligent
unsound
unwise
wacky
imbecilic
doublespeak
purportless
unmeaning
without rhyme or reason

Antonyms

logical
sensible
intelligent

meaningful
rational
wise

reasonable
feeling

Synonyms
adj trembling

rocky
nervous
insecure
weak
precarious
unstable
wobbly
unsettled
jittery
rickety

unsteady
infirm
jerry-built
rattletrap
shaking
tremulous
unsound
unsure
vacillating
wavering

yielding
aquiver
quivery
tottering
tottery
tumbledown
all aquiver
aquake
ashake
faltering

fluctuant
jellylike
not set
quaking
rootless
tremorous
unfirm

Antonyms

brave
confident
guarded
protected
stable
unwavering

steady
happy
certain
secure
sure
safe

sound
firm
strong
definite
unshaky
indubious

Synonyms
adj doubtful

questionable
unclear
uncertain
unsettled
precarious

dubious
unsteady
indecisive
problematic
suspect

undependable
unreliable
unsound
unsure
not dependable

not reliable
unsupported

Antonyms

undoubted
stable
unwavering
certain

definite
sure
clear
firm

steady
unshaky
indubious

Synonyms
adj not deep

flat
trivial
empty
hollow

shelf
slight
surface
shoal

trifling
cursory
sand bar
superficial

unsound
inconsiderable
depthless

Antonyms

aware
considered
intelligent

raised
full
important

significant
deep
thoughtful

Synonyms
adj misleading

incorrect
untrue
inaccurate
spurious
plausible
erroneous
deceptive
apparent
captious
credible

delusive
empty
fallacious
flattering
hollow
idle
illogical
likely
nugatory
ostensible

ostentatious
presumable
presumptive
pretentious
probable
seeming
sophisticated
unsound
vain
wrong

colorable
sophistic
false
apparently right
beguiling
casuistic
sophistical

Antonyms

honest
real
valid
truthful

credible
correct
right
true

accurate
genuine

Synonyms
adj dangerous

tricky
ominous
hazardous
unsafe
precarious
unreliable
icy

slippery
ticklish
unstable
risky
perilous
difficult
alarming

chancy
deceptive
faulty
hairy
insecure
menacing
misleading

shaky
undependable
unhealthy
unsound
wicked
jeopardous
dissembled

Antonyms

uncomplicated
honest
protected
stable
reliable
friendly
forthright

loyal
harmless
easy
certain
safe
secure
definite

strong
sure
straightforward
true
untreacherous

Synonyms
adj made up

bogus
deceitful
dishonest
fake
falsified
fictitious
fishy

framed
fraudulent
imaginary
incorrect
invalid
lying
misleading

phony
sham
unfounded
unsound
untrue
invented
false

concocted
cooked up
cooked-up
devised
fabricated
made up

Synonyms
adj crazy; mentally disturbed

unhinged
irrational
unsound
unstable
deranged
erratic
troubled

touched
batty
daft
demented
eccentric
flaky
insane

kinky
lunatic
mad
non compos mentis
nutty
psychotic
freaky

kooky
unscrewed
nobody home
not all there
out to lunch
unglued

Antonyms

sane
stable
sound
strong

steady
balanced
even
fair

just
well

Synonyms
adj irresponsible

unreliable
bum
capricious
careless
changeable
dubious
erratic
fickle

fly-by-night
inconsistent
inconstant
indefinite
indeterminate
loose
treacherous
trick

tricky
uncertain
unpredictable
unsafe
unsound
unstable
unsure
untrustworthy

variable
no-good
no bargain
trustless
unassured

Antonyms

dependable
reliable

trustworthy
responsible

Synonyms
adj sick

unsound
delicate
ailing
below par
debilitated
diseased
down

dragging
feeble
frail
ill
infirm
invalid
peaked

poorly
run-down
shaky
sickly
unwell
weak
in a decline

in ill health
in poor health
laid low
out of action
out of shape

Antonyms

healthy
strong

well
good

Synonyms
adj very bad in effect on well-being

perverse
noxious
dangerous
hazardous
negative
perilous
harmful
unsound
degrading

detrimental
undesirable
corrupt
unsanitary
corrupting
poisonous
risky
baneful
chancy

degenerate
deleterious
morbid
nefarious
noisome
rotten
treacherous
unhealthful
unwholesome

villainous
virulent
wicked
demoralizing
insalubrious
jeopardous

Antonyms

helpful
wholesome
guarded
healthy

good
pure
safe
secure

certain
sound
strong
well

Synonyms
adj not trustworthy, not true

tricky
uncertain
inaccurate
irresponsible
treacherous
dubious
unsound
fickle
unstable
deceptive
untrustworthy

capricious
undependable
deceitful
delusive
disreputable
erroneous
fake
fallible
fly-by-night
furtive
hollow

implausible
inconstant
makeshift
meretricious
mistaken
pretended
pseudo
questionable
sham
shifty
specious

unconvincing
underhand
underhanded
unfaithful
unsure
untrue
vacillating
wavering
weak
hallucinatory
false

Antonyms

frank
honest
reliable
trustworthy
forthright
stable
truthful

dependable
certain
clear
definite
sure
accurate
correct

right
true
strong
constant
faithful
steady
responsible

Synonyms
adj dangerous

uncertain
hazardous
treacherous
untrustworthy
unsound
unstable
unreliable

perilous
risky
insecure
alarming
chancy
erratic
explosive

precarious
shaky
slippery
threatening
ticklish
touchy
undependable

fearsome
hanging by a thread
on a limb
on thin ice
touch and go

Antonyms

honest
reliable
trustworthy
stable

harmless
protected
certain
secure

sure
safe
true
strong

Synonyms
adj dishonest

incorrect
erroneous
inaccurate
unsound
spurious
apocryphal
distorted
mistaken
fictitious
specious
wrong
misleading

untruthful
deceptive
unfaithful
cheating
deceitful
delusive
deviant
disloyal
faithless
fallacious
hollow
inconstant

inexact
lying
meretricious
off
perfidious
recreant
sham
traitorous
treacherous
two-faced
untrustworthy
wide

counterfactual
perjured
false
dissembling
forsworn
imprecise
out of line
prevaricating
unloyal

Antonyms

valid
factual
real
honest
truthful
authentic

correct
right
true
accurate
actual
genuine

precise
just
straight
sound
faithful

Synonyms
adj stupid, irresponsible

foolhardy
ill-considered
thoughtless
inappropriate
naive
unsound
silly

undesirable
unfortunate
ill-advised
foolish
misguided
reckless
imprudent

childish
immature
impolitic
improvident
inadvisable
inane
indiscreet

inept
injudicious
rash
senseless
short-sighted
unintelligent
witless

Antonyms

careful
cautious
discreet
wise

sensible
prudent
sagacious
thoughtful

serious
responsible

Synonyms
adj lacking, inadequate

deficient
gone
short
missing
shy
failing
deprived
disappointing
needed
omitted
scant

bankrupt
empty
absent
away
bereft
cut off
defective
destitute
devoid
faulty
half-baked

imperfect
incomplete
inferior
less
minus
patchy
poor
scanty
scarce
sketchy
substandard

unsound
unfulfilled
cooked
burned out
in default
not good enough
not up to par
out of gas
too little too late

Antonyms

existing
adequate
enough

sufficient
satisfactory
present

perfect

Synonyms
adj not strong

shaky
uncertain
hesitant
weakened
powerless
fragile
anemic
sickly
wobbly
frail
sluggish
feeble
unsteady

debilitated
decrepit
delicate
effete
enervated
exhausted
faint
flaccid
flimsy
infirm
insubstantial
irresolute
lackadaisical

languid
limp
makeshift
prostrate
puny
rickety
rocky
rotten
senile
spent
spindly
supine
tender

torpid
undependable
unsound
unsubstantial
wasted
wavering
languorous
weakly
forceless
impuissant
out of gas

Antonyms

unwavering
powerful
unbreakable
healthy
stable
potent
brave
confident
noisy
capable

sufficient
guarded
protected
firm
steady
certain
sure
definite
active
strong

able
hearty
bold
loud
fit
safe
secure
concentrated
thick
unshaky

Synonyms
adj destructive, troublesome

outrageous
fierce
ugly
acute
agonizing
awful
barbarous
bothersome
chancy
dangerous

difficult
distressing
dreadful
fearful
galling
harmful
hazardous
injurious
intense
mean

mighty
offensive
painful
perilous
pesky
risky
severe
terrible
treacherous
trying

uncivilized
unconscionable
ungodly
unhealthy
unholy
unpleasant
unsound
vexatious
crashing
troublous

Antonyms

pleasing
kind
moral
assisting
helpful

useful
worthwhile
good
gentle
decent

nice
aiding
amateur

Synonyms
adj incorrect

untrue
inaccurate
mistaken
unsound
bad
erroneous
awry
amiss
misguided
erring
out
askew

astray
at fault
defective
erratic
fallacious
faulty
inexact
out of commission
out of order
perverse
rotten
specious

spurious
unsatisfactory
unsubstantial
wide
counterfactual
false
miscalculated
fluffed
misconstrued
mishandled
goofed
in error

misfigured
not precise
not right
not working
off-target
on the wrong track
out of line
sophistical
ungrounded

Antonyms

honest
valid
OK
moral
acceptable
appropriate

suitable
true
accurate
correct
precise
right

just
sound
good
decent

Synonyms
adj dilapidated

decrepit
run-down
ramshackle
bedraggled

deteriorated
infirm
neglected
old

seedy
shabby
threadbare
unsound

battered
falling apart
in disrepair

Antonyms

healthy
intact
sturdy

good
solid
sound

well-kept

Synonyms
adj of unsound mind

demented
lunatic

unbalanced
unsound

non compos
not of sound mind

deprived of one’s wits

Synonyms
adj tottery

makeshift

rickety

unsound

unstable

Synonyms
adj unhealthy

baneful
corrupt
decayed
deleterious
detrimental
evil

foul
harmful
immoral
impure
inimical
malignant

morbid
noxious
offensive
pernicious
poisonous
repulsive

toxic
unclean
unhealthful
unsound
insalubrious
pathological

Antonyms

seemly
healthful

nutritious
wholesome

proper

Synonyms
adj perverted

perverse
distorted
corrupt

perplexing
confused
sick

puzzling
awry
unsound

Antonyms

wholesome
clean
even

straight
clear
simple

untwisted

Synonyms
adj indefensible

unsound

illogical

unsupportable

flawed

Synonyms
adj shaky

rocky
groggy
precarious
unstable
wobbly
rickety
erratic

capricious
changeable
dizzy
fickle
giddy
inconstant
unreliable

unsettled
unsound
vacillating
variable
wavering
wayward
quivery

fluctuating
shifting
teetering
tippy
wabbly
wiggly

Antonyms

dependable
stable
steady

certain
definite
strong

sure

Synonyms
adj insane

crazy
lunatic
cuckoo
maniac
nuts
sick
psycho
crackers
bonkers

brainsick
daft
demented
deranged
distraught
disturbed
dotty
kooky
loco

mad
maniacal
mentally ill
moonstruck
touched
unbalanced
unhinged
unsound
wacky

crazy as a loon
mad as a hatter
not all there
nutty as a fruitcake
out to lunch
sick in the head
stark raving mad
off one’s rocker
out of one’s mind

Antonyms

sane

sensible

healthy

Synonyms
adj insane

batty
bonkers
cracked
crackers
crazed
crazy
daft
demented

disordered
distraught
dotty
lunatic
mad
maniac
maniacal
mentally ill

moonstruck
nuts
nutty
psychotic
touched
unbalanced
unhinged
unsound

mad as a hatter
not all there
sick in the head
stark raving mad
off one’s rocker
out of one’s mind

Synonyms
adj insane

crazy
lunatic
cuckoo
nuts
psychotic
sick
psycho
batty
bonkers

brainsick
cracked
crazed
daft
demented
deranged
distraught
disturbed
dotty

kooky
loco
mad
mentally ill
moonstruck
nutty
touched
unbalanced
unhinged

unsound
wacky
crazy as a loon
not all there
out to lunch
sick in the head
stark raving mad
off one’s rocker
out of one’s mind

Antonyms

sane

sensible

healthy

Synonyms
adj insane

nutty
bananas
batty
bonkers
buggy
crackers
crazed
crazy
cuckoo

daft
demented
disordered
dotty
eccentric
kooky
loco
loony
lunatic

mad
mentally ill
moonstruck
nuts
off
touched
unbalanced
unsound
wacky

crazy as a loon
mad as a hatter
not all there
nutty as a fruitcake
of unsound mind
stark raving mad
off one’s rocker
out of one’s mind

Synonyms
adj unwise

thoughtless
indiscreet
ill-advised
misguided
reckless
imprudent
childish

foolhardy
foolish
immature
impolitic
improvident
inadvisable
inane

inappropriate
inept
injudicious
naive
rash
senseless
short-sighted

silly
undesirable
unfortunate
unintelligent
unsound
witless

Antonyms

wise

careful

cautious

Synonyms
adj insane

batty
bizarre
brainsick
cracked
crazed
cuckoo
daft
demented
deranged
disordered
distraught
dotty
fatuous
frenzied
idiotic

impractical
irrational
irresponsible
loony
lunatic
maniac
maniacal
mentally ill
moonstruck
nuts
nutty
paranoid
preposterous
psychopathic
psychotic

rabid
raging
raving
screwy
senseless
unhinged
unsound
around the bend
crazy
crazy as a loon
derailed
mad
mad as a hatter
mental
not all there

nutty as a fruitcake
of unsound mind
off
schizophrenic
sick in the head
stark raving mad
touched
unbalanced
unsettled
wild
wrong
off one’s rocker
out of one’s mind

Synonyms
adj insane

batty
bizarre
brainsick
cracked
crazed
cuckoo
daft
demented
deranged
disordered
distraught
dotty
fatuous
frenzied
idiotic

impractical
irrational
irresponsible
loony
lunatic
maniac
maniacal
mentally ill
nuts
nutty
paranoid
preposterous
psychopathic
psychotic
rabid

raging
raving
screwy
senseless
unhinged
unsound
around the bend
crazy
crazy as a loon
derailed
mad
mad as a hatter
mental
not all there
nutty as a fruitcake

of unsound mind
off
schizophrenic
sick in the head
stark raving mad
touched
unbalanced
unsettled
wild
wrong
off one’s rocker
out of one’s mind

Synonyms
adj fallacious

deceptive
delusive
delusory
erroneous
fictitious
fishy
fraudulent
illogical
illusory

incorrect
invalid
irrational
mad
misleading
mistaken
off
phony
specious

spurious
unfounded
unreal
unreasonable
unreasoned
unsound
untrue
beguiling
deceiving

deluding
false
reasonless
sophistical
ungrounded
way off

Synonyms
adj insecure

loose
vacillating
wavering
exposed
defenseless
frail
hazardous
immature

infirm
insubstantial
perilous
precarious
rickety
rocky
shaky
tottery

unguarded
unprotected
unreliable
unsafe
unsound
unstable
unsteady
unsure

vulnerable
weak
wobbly
rootless
fluctuant
open to attack
unshielded

Synonyms
adj insecure

defenseless
exposed
frail
hazardous
immature
infirm
insubstantial
loose

perilous
precarious
rickety
rocky
shaky
tottering
unguarded
unprotected

unreliable
unsafe
unsound
unstable
unsteady
unsure
vacillating
vulnerable

wavering
weak
wobbly
fluctuant
open to attack
rootless
unshielded

Synonyms
adj not true

counterfactual
deceitful
deceptive
delusive
deviant
disloyal
distorted
erroneous
faithless
fallacious
fictitious

hollow
inaccurate
inconstant
incorrect
inexact
lying
meretricious
misleading
mistaken
off
perfidious

perjured
recreant
sham
specious
spurious
traitorous
treacherous
two-faced
unfaithful
unsound
untrue

untrustworthy
untruthful
wide
wrong
dissembling
false
forsworn
imprecise
out of line
prevaricating
unloyal

Synonyms
adj infirm

ailing
anemic
debilitated
decrepit
delicate
failing
faint
feeble

flimsy
fragile
frail
halting
ill
insecure
insubstantial
irresolute

lame
puny
shaky
unsound
unstable
unsubstantial
vacillating
wavering

weak
wobbly
anile
enfeebled
faltering
laid low
sensile