Search

Synonyms for in efficacious
adj ineffectual

abortive
barren
bootless
feckless
feeble
fruitless
futile
idle
impotent
inadequate
incompetent

indecisive
ineffective
inefficient
inept
inferior
innocuous
inoperative
lame
limited
nugatory
null

null and void
paltry
powerless
spineless
unable
unavailing
unfruitful
unproductive
unprofitable
unsuccessful
useless

vain
void
withered
worthless
anticlimactic
defeasible
forceless
invertebrate
neutralized

Synonyms
adj unrealistic

abstract
absurd
chimerical
idealistic
illogical
impossible
impracticable
improbable
inapplicable
inefficacious

otherworldly
out of the question
quixotic
romantic
speculative
starry-eyed
theoretical
unattainable
unfeasible
unreal

unusable
unwise
unworkable
useless
visionary
wild
infeasible
inoperable
irrealizable
ivory-tower

no-go
nonfunctional
nonviable
not a prayer
unbusinesslike
unserviceable
won’t fly

Antonyms

practicable
probable
tenable

viable
practical
realistic

reasonable

Synonyms
adj weak, useless

abortive
barren
bootless
feckless
feeble
fruitless
futile
idle
impotent
inadequate
incompetent

indecisive
inefficient
inept
inferior
innocuous
inoperative
lame
limited
nugatory
null
null and void

paltry
powerless
spineless
unable
unavailing
unfruitful
unproductive
unprofitable
unsuccessful
vain
void

withered
worthless
inefficacious
anticlimactic
defeasible
forceless
invertebrate
neutralized

Antonyms

competent
effectual
efficient

powerful
useful
effective

strong

Synonyms
adj not working well; wasteful

sloppy
inept
weak
feeble
disorganized
ineffective
ineffectual
faulty

incompetent
careless
extravagant
half-baked
improvident
incapable
inefficacious
inexpert

prodigal
slack
slipshod
slovenly
unfit
unprepared
unqualified
unskilled

unskillful
untrained
improficient
not cut out for
shooting blanks
can’t hack it

Antonyms

competent
dexterous
skillful
capable
efficient

expert
useful
neat
tidy
able

fit
strong
effective
sound

Synonyms
adj ineffectual, valueless

worthless
inoperative
unreal
invalid
ineffective
void

negative
barren
bad
nothing
imaginary
absent

nonexistent
null and void
powerless
unavailing
useless
vain

inefficacious
characterless
unsanctioned

Antonyms

worthwhile
worthy
filled
profitable

effectual
valid
valuable
full

good
true
effective

Synonyms
adj not having talent, skill

weak
impotent
unfit
incapable
inadequate
helpless
powerless
clumsy

incapacitated
incompetent
ineffectual
inefficacious
inefficient
inept
inoperative
out of commission

unqualified
unskilled
sidelined
not able
hog-tied
impuissant
no can do
no good

not cut out for
not equal to
not up to
unfitted
can’t cut it
can’t hack it
can’t make the grade

Antonyms

potent
capable
sufficient
competent

adequate
skillful
talented
strong

able
fit
qualified

Synonyms
adj futile, useless

fruitless
petty
trivial
frivolous
abortive
barren
bootless
delusive
empty
hollow

idle
insignificant
misleading
nugatory
otiose
paltry
pointless
puny
senseless
shuck

slight
sterile
trifling
unavailing
unimportant
unproductive
unprofitable
valueless
void
worthless

delusory
inefficacious
going nowhere
in vicious circle
no-win
not a prayer
on a treadmill
profitless
time-wasting
unnotable

Antonyms

useful
consequential
possible

important
significant
modest

shy

Synonyms
adj unrealistic

illogical
speculative
unworkable
unusable
improbable
unreal
absurd
unwise
quixotic

impossible
unattainable
useless
abstract
chimerical
idealistic
impracticable
inapplicable
inefficacious

otherworldly
romantic
starry-eyed
theoretical
unfeasible
visionary
wild
infeasible
inoperable

ivory-tower
no go
nonfunctional
nonviable
unbusinesslike
unserviceable
won’t fly

Antonyms

logical
rational
sensible

believable
possible
tenable

wise
reasonable
practical

Synonyms
adj useless

fruitless
indecisive
worthless
unable
unproductive
inefficient
limited
inadequate
inept
null
impotent
powerless

feeble
ineffectual
futile
unsuccessful
unprofitable
incompetent
abortive
barren
bootless
emasculate
feckless
idle

inferior
innocuous
inoperative
lame
nugatory
paltry
spineless
unavailable
unavailing
unfruitful
vain
void

withered
inefficacious
anticlimactic
defeasible
forceless
neutralized
no go
no way
not effective
slack-spined

Antonyms

fruitful
potent
productive
profitable
successful
useful
valuable
worthwhile

worthy
adequate
capable
competent
skillful
efficient
expert
sufficient

dexterous
effectual
powerful
able
fit
effective
strong

Synonyms
adj impracticable

abstract
absurd
chimerical
idealistic
illogical
impossible
impractical
improbable
inapplicable
inefficacious

otherworldly
out of the question
quixotic
romantic
speculative
starry-eyed
theoretical
unattainable
unfeasible
unreal

unusable
unwise
unworkable
useless
visionary
wild
infeasible
inoperable
irrealizable
ivory-tower

no-go
nonfunctional
nonviable
not a prayer
unbusinesslike
unserviceable
won’t fly

Synonyms
adj impracticable

impractical
unattainable
unworkable
useless
abstract
absurd
chimerical
idealistic
illogical

impossible
improbable
inapplicable
inefficacious
otherworldly
out of the question
quixotic
romantic
speculative

starry-eyed
theoretical
unfeasible
unnegotiable
unreal
unwise
visionary
wild
inoperable

infeasible
irrealizable
ivory-tower
no-go
nonfunctional
nonviable
not a prayer
unbusinesslike
won’t fly

Synonyms
adj impracticable

impractical
illogical
unusable
useless
impossible
unattainable
absurd
abstract
chimerical

idealistic
improbable
inapplicable
inefficacious
otherworldly
out of the question
quixotic
romantic
speculative

starry-eyed
theoretical
unfeasible
unnegotiable
unreal
visionary
wild
infeasible
inoperable

irrealizable
ivory-tower
no-go
nonfunctional
nonviable
not a prayer
unbusinesslike
unserviceable
won’t fly

Antonyms

sensible
logical

rational
reasonable

Synonyms
adj inefficient

careless
disorganized
extravagant
faulty
feeble
half-baked
improvident
inapt

incapable
incompetent
ineffective
ineffectual
inefficacious
inept
inexpert
prodigal

slack
slipshod
sloppy
slovenly
unfit
unprepared
unqualified
unskilled

unskillful
untrained
weak
improficient
not cut out for
shooting blanks
can’t hack it