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Synonyms for in substantial
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 for in substantial

real
genuine

strong
substantial

thick
serious

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 evasive, mysterious

tricky
ambiguous
volatile
fleeting
puzzling
illusory
slippery
subtle
incomprehensible

baffling
cagey
deceitful
deceptive
equivocal
evanescent
fallacious
fraudulent
fugitive

greasy
insubstantial
intangible
misleading
occult
phantom
shifty
shy
transient

transitory
fugacious
imponderable
indefinable
difficult to catch
elusory
stonewalling
unspecific

Antonyms

honest
stable
intelligible
confronting

enticing
inviting
definite
understandable

attracting
encountering
facing

Synonyms
adj delicate, heavenly

celestial
intangible
exquisite
ghostly
airy
sublime
aerial
dainty

divine
empyrean
fairy
filmy
fine
gaseous
gossamer
impalpable

insubstantial
light
rarefied
refined
spiritual
subtle
supernal
tenuous

unearthly
unsubstantial
unworldly
vaporous
empyreal
vapory

Antonyms

indelicate
poor

earthly
worldly

Synonyms
adj not strong; ineffective

fragile
paltry
inefficient
weakened
lame
frail
weak
flabby
tame
sickly
decrepit
infirm
ailing
incompetent

puny
aged
chicken
debilitated
delicate
doddering
dopey
effete
enervated
exhausted
failing
faint
flat
gentle

helpless
impotent
inadequate
indecisive
ineffectual
insubstantial
insufficient
languid
low
poor
powerless
slight
thin
unconvincing

woozy
zero
weakly
emasculated
enfeebled
etiolated
out of gas
sapless
strengthless
vitiated
wimpy

Antonyms

unbreakable
capable
competent
efficient
expert
healthy

hardy
powerful
firm
strong
able
fit

hearty
effective
solid
sound

Synonyms
adj finespun, fragile

dainty
delicate
diaphanous
fine
flimsy

gauzy
gossamer
insubstantial
sheer
transparent

wispy
see-through
chiffon
cobwebby
fine-grained

floaty
tiffany

Antonyms

translucent
nontransparent

opaque
substantial

clean
clear

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 see-through, gossamer in texture

translucent
delicate
diaphanous
filmy

flimsy
insubstantial
light
lucid

pellucid
sheer
thin
transparent

tiffany

Antonyms

cloudy
foggy

obscured
heavy

opaque
thick

Synonyms
adj spooky

spectral
scary
eerie
shadowy
supernatural
ghastly
weird

cadaverous
divine
haunted
holy
illusory
insubstantial
pale

phantom
spiritual
uncanny
unearthly
wan
deathlike
ghostlike

phantasmal
apparitional
corpselike
eidolic
vampiric
wraithlike
wraithy

Antonyms

normal

Synonyms
adj intangible, unsubstantial

airy
delicate
fine
imperceptible
incorporeal
indiscernible

indistinct
insensible
insubstantial
nebulous
shadowy
tenuous

thin
vague
disembodied
imponderable
inappreciable
unobservable

imprecise
unapparent
unperceivable

Antonyms

perceptible
tangible

believeable
palpable

substantial
understandable

Synonyms
adj defective, insufficient, incompetent

poor
unequal
lacking
deficient
weak
meager
sketchy
scarce
faulty
incompetent
incomplete
skimpy
bare

barren
bush-league
depleted
dry
failing
feeble
glitch
imperfect
impotent
inapt
incapable
incommensurate
insubstantial

junk
lame
lemon
lousy
low
minus
miserly
parsimonious
scanty
short
shy
small
spare

sparse
sterile
stunted
thin
unproductive
unqualified
inappreciable
inconsiderable
found wanting
niggardly
not enough
stinted
too little

Antonyms

adequate
sufficient
potent
abundant
enough

capable
competent
strong
perfect
able

full
complete
finished

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 flimsy

cheap
defective
insubstantial

makeshift
ramshackle
rickety

shoddy
slipshod
unsound

unsubstantial
jerry-rigged
junky

Synonyms
adj not heavy

agile
slight
buoyant
fluffy
loose
slender
delicate
easy
lightweight
small
airy
thin
sheer

petty
portable
little
flimsy
dainty
floating
trifling
atmospheric
crumbly
downy
effervescent
ethereal
feathery

filmy
friable
frothy
graceful
inconsequential
insubstantial
lithe
meager
nimble
porous
sandy
spongy
sprightly

trivial
unsubstantial
weightless
featherweight
floatable
gossamery
imponderous
light-footed
sylphlike
tissuelike
unheavy

Antonyms

large
useful
clumsy
dusky
big
important
fat
thick
heavy
coarse

rough
strict
strong
oppressive
significant
black
dark
darkened
dim
gloomy

obscure
brunette
weighted
difficult
laborious
grave
serious
solemn

Synonyms
adj small, inadequate; poor

paltry
tenuous
scanty
minimum
sparse
miserable
scant
insufficient
mere

puny
skimpy
bare
barren
deficient
exiguous
flimsy
infertile
insubstantial

little
scrimp
shabby
short
skimp
slender
slight
spare
subtle

unfinished
unfruitful
unproductive
wanting
weak
inappreciable
inconsiderable
scrimpy
too little too late

Antonyms

wealthy
ample
plentiful
adequate
enough
sufficient

large
rich
significant
substantial
generous
liberal

plenty
big
fat
full
wide

Synonyms
adj without use, value, worth

worthless
insignificant
trivial
senseless
inconsequential
hollow
unimportant
useless
absurd

pointless
vague
empty
futile
aimless
blank
double-talk
feckless
fustian

good-for-nothing
hot air
inane
insubstantial
nonsensical
nothing
nugatory
purposeless
trifling

vacant
vain
valueless
vapid
doublespeak
purportless
unmeaning
unpurposed
doesn’t cut it

Antonyms

valuable
worthwhile
consequential
useful
rational
sensible

wise
meaningful
profitable
fruitful
productive
important

significant
substantial
reasonable
full
certain

Synonyms
adj not physical; without physical presence

mystical
spiritual
abstract
esoteric
philosophical
supernatural
abstruse
theoretical
deep
difficult
eternal

fundamental
high-flown
ideal
immaterial
impalpable
incorporeal
insubstantial
intangible
intellectual
preternatural
profound

recondite
superhuman
superior
transcendental
unearthly
universal
unreal
unsubstantial
bodiless
nonphysical
numinous

discarnate
jesuitic
nonmaterial
oversubtle
supermundane
suprahuman
supramundane
supranatural
unfleshly
unphysical

Antonyms

factual
real
obvious

objective
physical
concrete

material
solid
substantial

Synonyms
adj fictional, not real

absent
vacant
negative
tenuous
airy
baseless
blank
chimerical
dead
defunct
departed
dreamy

empty
ethereal
extinct
flimsy
gone
groundless
hypothetical
illusory
imaginary
imagined
immaterial
insubstantial

legendary
lost
missing
mythical
null
null and void
shadowy
unreal
unsubstantial
vague
vaporous
void

hallucinatory
imponderable
dreamlike
extinguished
fancied
few and far between
gossamery
passed away
passed on
perished
ungrounded
without foundation

Antonyms

existing
real

actual
existent

true

Synonyms
adj light in color or effect

pasty
gray
poor
dim
blanched
faint
haggard
thin
sick
faded

white
wan
sallow
dull
anemic
ashen
bloodless
cadaverous
colorless
feeble

ghastly
inadequate
ineffective
ineffectual
insubstantial
livid
lurid
pallid
sickly
spectral

unsubstantial
washed-out
waxen
weak
ashy
deathlike
bleached
doughy
waxlike
whitish

Antonyms

flushed
healthy
intelligent
strong
happy
bright

clear
distinct
light
smart
colored
heavy

dark
colorful
glowing
radiant

Synonyms
adj thin, flimsy

insubstantial
cardboard

disposable
paper-thin

papery
wafer-thin

Antonyms

thick

Synonyms
adj meager, trivial

barren
deficient
flimsy
insubstantial
insufficient
little
measly
mere

microscopic
minute
negligible
paltry
petty
puny
short
skimpy

slight
small
sparse
superficial
two-bit
unproductive
worthless
diddly

inconsiderable
scant
rinky-dink
scrimpy
too little too late

Synonyms
adj thin, not heavy

attenuate
beanpole
fine
insubstantial
lean
lithe

narrow
skeleton
skinny
slight
spare
stick

svelte
tenuous
trim
willowy
twiggy
threadlike

beanstalk
reedy
stalky
sylphlike

Antonyms

chubby
overweight
plump
adequate

sensible
sufficient
fat
heavy

thick
reasonable

Synonyms
adj insignificant, small

superficial
slim
meager
slender
modest
negligible

trivial
minor
petty
off
scanty
fat

piddling
outside
remote
trifling
feeble
insubstantial

paltry
sparse
unessential
unimportant
weak
inconsiderable

Antonyms

large
useful
likely
chubby

important
major
significant
big

great
tall
thick

Synonyms
adj weak, thin

questionable
shaky
flimsy
dubious
nebulous
sketchy
delicate

insubstantial
aerial
airy
attenuate
doubtful
ethereal
fine

gossamer
insignificant
light
narrow
rare
rarefied
slender

slight
slim
subtle
twiggy
attenuated
reedy

Antonyms

healthy
stable
certain
definite

sure
firm
heavy
strong

substantial
significant
thick

Synonyms
adj deficient, weak

poor
flat
shallow
meager
flimsy
sparse
thick
transparent
skimpy

slight
diluted
lame
scattered
scant
feeble
implausible
improbable
inadequate

inconceivable
incredible
insubstantial
insufficient
questionable
scanty
scarce
sketchy
superficial

unbelievable
unconvincing
unsubstantial
untenable
vapid
stretched
unpersuasive
weak-kneed

Antonyms

adequate
sufficient
intelligent
inflated
obese
efficient

strong
substantial
full
reasonable
concentrated
dense

fat
heavy
solid
undiluted

Synonyms
adj temporary, brief

changeable
ephemeral
evanescent
flash
fleeting
flitting
fly-by-night

flying
fugitive
impermanent
insubstantial
momentary
moving
passing

provisional
short
short-lived
temporal
unstable
volatile
fugacious

short-term
transmigratory
deciduous
emigrating
going by
migrating
vacating

Antonyms

enduring
incessant
lasting

long-lasting
permanent
persistent

undying
neverending

Synonyms
adj fake, make-believe; hypothetical

unbelievable
immaterial
illusory
fanciful
hallucinatory
unsubstantial
artificial
insubstantial
aerial
chimerical
delusive

fabled
fabulous
fictitious
ideal
imaginary
imagined
impalpable
insincere
intangible
legendary
misleading

mock
mythical
nebulous
nonexistent
ostensible
pretended
romantic
seeming
sham
theoretical
visionary

fictive
invented
notional
phantasmagoric
suppositious
supposititious
false
dreamlike
figmental
reachy
storybook

Antonyms

real

authentic

genuine

Synonyms
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

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 airy

aerial
ethereal
fleeting
foggy

hazy
insubstantial
misty
vague

volatile
wispy
smoggy
vapory

halituous

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 not real

imaginary

insubstantial

fancied

thought up

Synonyms
adj temporary

ephemeral
fleeting
transitory
short-term
flash
temporal
flying
brief

fugitive
short
volatile
passing
fly-by-night
changeable
evanescent
flitting

impermanent
insubstantial
momentary
moving
provisional
short-lived
unstable
fugacious

transmigratory
deciduous
emigrating
going by
migrating
vacating

Antonyms

enduring
lasting
permanent

perpetual
long-lived
long

lengthy

Synonyms
adj incorporeal

disembodied
immaterial
insubstantial

metaphysical
spiritual
unbodied

unsubstantial
discarnate
discorporate

nonmaterial

Synonyms
adj immaterial

aerial
airy
bodiless
celestial
disembodied
dreamy
ethereal
ghostly
heavenly
impalpable

imponderable
incorporate
incorporeal
insensible
insubstantial
intangible
metaphysical
psychic
shadowy
spectral

spiritual
subjective
supernatural
unbodied
uncorporal
unearthly
unsubstantial
unworldly
apparitional
asomatous

disbodied
discarnate
dreamlike
nonmaterial
spiritlike
unembodied
unfleshly
wraithlike

Synonyms
adj meager

paltry
slight
scanty
sparse
insufficient
mere
skimpy
short
spare
skimp

bare
thin
scrimp
wanting
barren
deficient
exiguous
flimsy
inappreciable
inconsiderable

infertile
insubstantial
little
minimum
miserable
poor
puny
shabby
slender
stingy

subtle
tenuous
unfinished
unfruitful
unproductive
weak
scrimpy
too little too late

Antonyms

ample
plentiful
adequate

enough
sufficient
important

significant
thick
fat

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 immaterial

aerial
airy
bodiless
celestial
disembodied
dreamy
ethereal
ghostly
heavenly
impalpable

imponderable
incorporate
incorporeal
insensible
insubstantial
intangible
metaphysical
nonphysical
psychic
shadowy

spectral
spiritual
subjective
supernatural
uncorporal
unearthly
unsubstantial
unworldly
apparitional
asomatous

disbodied
discarnate
dreamlike
nonmaterial
spiritlike
unembodied
unfleshly
wraithlike

Synonyms
adj immaterial

aerial
airy
bodiless
celestial
disembodied
dreamy
ethereal
ghostly
heavenly
impalpable

imponderable
incorporate
incorporeal
insensible
insubstantial
intangible
metaphysical
nonphysical
psychic
shadowy

spectral
spiritual
subjective
supernatural
unbodied
unearthly
unsubstantial
unworldly
apparitional
asomatous

disbodied
discarnate
dreamlike
nonmaterial
spiritlike
unembodied
unfleshly
wraithlike

Synonyms
adj pale

anemic
ashen
ashy
blanched
bloodless
cadaverous
colorless
deathlike
dim
dull
faded

faint
feeble
ghastly
gray
haggard
inadequate
ineffective
ineffectual
insubstantial
livid
lurid

pallid
pasty
poor
sallow
sick
sickly
spectral
thin
unsubstantial
wan
washed-out

watery
waxen
weak
white
bleached
doughy
waxlike
whitish

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

Synonyms
adj light

trivial
inconsequential
ethereal
agile
airy
atmospheric
buoyant
crumbly
dainty
delicate
downy
easy
effervescent

feathery
filmy
flimsy
floating
fluffy
friable
frothy
graceful
insubstantial
lightweight
lithe
little
loose

meager
nimble
petty
porous
portable
sandy
sheer
slender
slight
small
spongy
sprightly
thin

trifling
unsubstantial
featherweight
floatable
gossamery
imponderous
light as a feather
light-footed
sylphlike
tissuelike
unheavy

Antonyms

important

significant