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What is another word for
inefficacious
?
Need
synonyms for inefficacious
? Here's a list of
similar words
from our
thesaurus
that you can use instead.
Contexts
▼
▲
Not producing the desired effect
Not negotiable
Not workmanlike
Unstreamlined. inefficient
Not working or taking effect
… more ▼
▲
Adjective
▲
Not producing the desired effect
ineffective
unsuccessful
futile
abortive
unproductive
fruitless
ineffectual
unavailing
unprofitable
useless
profitless
vain
bootless
inefficient
non-successful
worthless
failed
feeble
idle
inadequate
inept
purposeless
barren
counterproductive
empty
feckless
hamstrung
inexpedient
lame
otiose
weak
inutile
unfructuous
anticlimactic
defeasible
forceless
impotent
incompetent
indecisive
inferior
innocuous
inoperative
invertebrate
limited
neutralised
UK
neutralized
US
nugatory
null
paltry
powerless
spineless
unable
unfruitful
void
withered
to no effect
null and void
pointless
to no avail
in vain
hopeless
to no purpose
valueless
thwarted
unrewarding
hollow
trivial
sterile
foiled
impractical
Sisyphean
trifling
without success
frustrated
no dice
unimportant
of no use
unfit
pathetic
aimless
baulked
UK
meaningless
for nought
unremunerative
senseless
doomed
balked
US
lousy
insufficient
of no avail
frivolous
insignificant
unreal
on a treadmill
not worth the candle
poor
incapable
misfired
unsuitable
good-for-nothing
lazy
exhausted
dry
unpurposed
wasted
impracticable
bungled
defeated
unsatisfactory
vapid
delusive
blocked
unavailable
unprolific
gainless
junky
unsubstantial
petty
no-good
broken
save one's breath
no good
failing
thankless
uneconomic
botched
bungling
scant
miscarried
unimpressive
disastrous
emasculate
slack-spined
no use
needless
stymied
frustaneous
unlucrative
rotten
not effective
no go
no way
hindered
stonewalled
obstructed
a dead loss
cramped
inane
inconsequential
unworkable
unusable
insubstantial
motiveless
time-wasting
uncreative
slow
unyieldly
nonproductive
wasteful
for naught
dull
inactive
chaffy
cheap
banal
no-win
puny
misleading
slight
unnotable
shuck
delusory
boring
dead
unthrifty
ruinous
improvident
unserviceable
nonfunctional
spinning one's wheels
wild goose chase
shiftless
irresponsible
insipid
stale
uninspiring
going nowhere
faulty
nonpractical
unfunctional
uninteresting
in vicious circle
not a prayer
of no value
off
dysfunctional
expendable
scrap
unuseful
inoperable
pants
fouled up
tedious
arid
flat
commonplace
shooting blanks
non-functioning
indolent
slothful
apathetic
spiritless
forlorn
lacklustre
UK
dreary
monotonous
drab
unstimulating
prosaic
lifeless
humdrum
not useful
unambitious
incautious
fustian
uncareful
unenterprising
carefree
no-account
careless
unreliable
reckless
wild
ill-suited
deficient
inappropriate
unsuited
vacuous
vacant
unfilled
clear
not proper
not good enough
improper
lackluster
US
silent
turned off
not in use
not working
out of service
out of use
lost
invalid
incompatible
flimsy
junk
unadvantageous
inapt
inconsistent
defective
resultless
unneeded
out the window
without rhyme or reason
no good to gundy
bad
nonbinding
cancelled
UK
annulled
nonvalid
nullified
rescinded
repealed
abolished
revoked
absent
canceled
US
untrue
nonexistent
negative
unacceptable
imaginary
nothing
unsanctioned
unsound
miserable
negligible
wretched
unnecessary
irrelevant
unhelpful
piddling
measly
despicable
contemptible
inconsiderable
purportless
abandoned
sorry
picayune
minute
ignoble
trashy
footling
Mickey Mouse
unessential
wet
impossible
abject
base
effete
poxy
wishy-washy
wanky
piffling
nickel-and-dime
chicken
niggling
minor
casual
small
little
bogus
waste
mediocre
ne'er-do-well
pitiful
meagre
UK
mean
soft
nonsensical
nerveless
weakling
tame
pitiable
weak-kneed
characterless
milk-and-water
namby-pamby
peripheral
nominal
piddly
pimping
peanut
rubbishy
wanton
limp-wristed
beyond hope
meager
US
dinky
inappreciable
small-fry
immaterial
de minimis
unachievable
light
fiddling
superficial
foolish
small-time
incidental
low-ranking
of no consequence
nonessential
second-rate
of no account
uncalled-for
uncalled for
not having a prayer
with no chance of success
drossy
of no great concern
impuissant
unconvincing
stillborn
throwaway
stupid
disadvantageous
thin
unsalable
pyrrhic
insincere
implausible
specious
shallow
groundless
absurd
ruined
spoiled
US
of no earthly use
not helpful
woeful
parlous
unasked
spoilt
UK
lamentable
deplorable
baseless
insane
fatuous
helpless
unpromising
threatening
sinister
menacing
messed up
vague
uncommunicative
rambling
unfounded
vile
unconstructive
adverse
redundant
nongermane
superfluous
unreturned
Pyrrhic
infertile
crummy
sad
ill-fated
bleak
minuscule
bush-league
minor-league
uncelebrated
lightweight
lesser
secondary
obscure
infinitesimal
smalltime
goalless
unreasonable
lacking foundation
not worth it
debased
depraved
degraded
low
witless
indiscriminate
designless
mindless
thoughtless
illogical
irrational
desperate
despairing
despondent
unattainable
beyond remedy
despaired of
shameful
disgraceful
dishonourable
UK
dishonorable
US
without grounds
without foundation
not pertinent
desultory
brainless
random
subsidiary
villainous
ignominious
corrupt
degenerate
infecund
not serious
wimpish
frail
wimpy
weakened
ridiculous
floundering
drifting
undirected
haphazard
scanty
irresolute
silly
not fruitful
acarpous
bare
childless
of no benefit
beggarly
mingy
ungenerous
mere
derisory
rubbish
non-essential
two a penny
not much cop
unassertive
skimpy
of little account
pettifogging
exiguous
hit-or-miss
extraneous
uninformative
meek
cowardly
gutless
timid
weak-willed
fickle
passive
a dime a dozen
dithering
faltering
craven
frothy
of little consequence
of little importance
tinpot
of no moment
not worth mentioning
zero
zilch
of no importance
zip
twopenny-halfpenny
shoestring
indifferent
not worth a hill of beans
timorous
wavering
indeterminate
vacillating
pusillanimous
undetermined
fallible
neither here nor there
no great shakes
not worth speaking of
beside the point
chicken-hearted
corruptible
supine
yellow
lily-livered
hemming and hawing
waffling
yellow-bellied
undependable
faint-hearted
yielding
unsure
easily led
more ❯
“Then I just started wittering in a pretty
inefficacious
way at the Carribean customer service woman.”
Adjective
▲
Not negotiable
unnegotiable
impractical
inoperable
unserviceable
useless
unfeasible
impossible
unattainable
abstract
absurd
chimerical
idealistic
illogical
improbable
inapplicable
infeasible
irrealizable
nonfunctional
nonviable
otherworldly
quixotic
romantic
speculative
theoretical
unbusinesslike
unreal
visionary
wild
unworkable
unusable
unwise
ivory-tower
no-go
starry-eyed
won't fly
not a prayer
out of the question
impracticable
nonpractical
unrealistic
non-viable
foolish
ineffectual
unachievable
ill-considered
unreasonable
far-fetched
cock-eyed
ill-thought-out
silly
crackpot
crazy
half-baked
unpractical
inept
unrealizable
incompetent
clueless
unviable
no go
hopeless
utopian
unworldly
extravagant
imaginary
impulsive
fantastical
perfectionist
idealist
Utopian
chivalrous
quixotical
dreamy
starry
fanciful
dreaming
impetuous
ineffective
head-in-the-clouds
optimistic
idealized
US
idealised
UK
out of touch with reality
naive
fairy-tale
far-sighted
abstracted
radical
daydreaming
illusory
imaginative
airy-fairy
nonrealistic
prophetic
delusory
lofty
grandiose
ambitious
pretentious
hopeful
unlikely
not sensible
ivory-towered
on cloud nine
castle-building
out there
perfect
ideal
vague
fantasizing
US
irrational
senseless
airy
fantasy
dream
sentimental
dreamlike
over-optimistic
potty
fantasising
UK
exaggerated
idyllic
high-flown
fantastic
arcadian
model
transcendental
supreme
pie-in-the-sky
ultimate
best
ideological
nonsensical
reachy
gone
floating
whimsical
fabulous
fictitious
legendary
not applicable
blue sky
made-up
Micawberish
Panglossian
happy
hoping
creative
inventive
inspired
prescient
insightful
innovative
perceptive
discerning
penetrating
ingenious
intuitive
enterprising
clever
shrewd
resourceful
sharp
gifted
wise
talented
hypothetical
exalted
astral
introspective
musing
noble
original
in the clouds
with your head in the clouds
more ❯
Adjective
▲
Not workmanlike
incapable
incompetent
inept
inadequate
inexpert
unfit
unfitted
unqualified
feeble
ineffective
unproficient
unskilful
ineffectual
inferior
insufficient
cack-handed
ham-fisted
hopeless
inapt
lacking ability
no good
pathetic
unable
unskilled
unskillful
useless
weak
not good enough
butterfingers
dependent
disqualified
frail
ineligible
inexperienced
inproficient
losing
naive
poor
uncool
unequipped
unsuited
vulnerable
a dead loss
leaving much to be desired
not much cop
not up to scratch
unequal to the task
not up to it
not up to snuff
not equal to
not equal to something
not up to
not up to something
out of one's depth
not know one's arse from one's elbow
can't hack it
not cut out for
bad
worthless
impotent
powerless
bum
untrained
prodigal
faulty
slovenly
slack
shooting blanks
careless
improficient
half-baked
extravagant
disorganized
US
sloppy
unprepared
improvident
slipshod
inefficient
inoperative
clumsy
can't cut it
disorganised
UK
unworkmanlike
amateurish
substandard
deficient
bungling
wanting
amateur
unprofessional
unsuitable
unapt
blundering
floundering
lacking
maladroit
undependable
unsatisfactory
raw
bush-league
defective
lousy
unreliable
incapacitated
ill-equipped
imperfect
unhandy
unacceptable
bush
awkward
not cut out
duff
negligent
crummy
suboptimal
subpar
green
incompatible
inadept
non-qualified
untaught
hapless
loser
not prepared
unequal
couldn't organize a piss-up in a brewery
untalented
cowboy
unpracticed
skill-less
not much chop
uninitiated
helpless
unadapted
no great shakes
less capable
not have it
out to lunch
unqualified for
untrained for
incapable of
incompetent at
unable to do something
out of one's element
can't make the grade
dissatisfactory
unable to do something for toffee
wrong
wretched
wack
paltry
lame
off
punk
sour
dreadful
shoddy
ill
crumby
deplorable
awful
disgraceful
laughable
abominable
terrible
frightful
atrocious
execrable
miserable
rotten
lamentable
diabolical
sorry
abysmal
ropy
woeful
appalling
pits
rubbish
God-awful
dire
poxy
pants
chronic
pitiful
egregious
not up to par
broken
second-rate
a load of pants
third-rate
second-class
more ❯
Adjective
▲
Unstreamlined. inefficient
unoptimized
inefficient
unstreamlined
disorganised
UK
disorganized
US
uneconomical
unproductive
wasteful
Adjective
▲
Not working or taking effect
inoperative
broken
broken-down
defective
down
unserviceable
faulty
kaput
useless
ineffective
invalid
non-functional
bust
ineffectual
inoperable
jiggered
kaputt
knackered
malfunctioning
nonfunctional
nonfunctioning
nonoperating
not functioning
not working
out of order
shot
unworkable
wonky
acting up
conked out
in disrepair
nonactive
gone haywire
gone kaput
gone phut
not in working order
null and void
on the blink
out of commission
out of service
broken down
hors de combat
out of action
out of whack
out of use
on the fritz
busted
damaged
non-functioning
unsound
done for
out of kilter
playing up
duff
inactive
dud
on its last legs
finished
unusable
dead
conked-out
imperfect
ruined
out
disabled
incapacitated
not in use
haywire
unoperational
up the spout
non-operational
worn-out
had it
idle
unavailing
off
not functional
inoperational
impaired
flawed
not in operation
unavailable for use
gone
spent
worn out
bonkers
kerflooey
run-down
fallen apart
not in service
gone to pieces
in the shop
on the shelf
in need of repair
given up the ghost
gone bust
stopped working
packed up
S
U
failed
done
bad
in repair
decommissioned
sunk
doomed
blemished
buggy
done in
old
worthless
futile
unavailable
dilapidated
unfunctional
valueless
crashed
inefficient
wracked
rumpty
unproductive
exhausted
unsatisfactory
weak
feeble
dysfunctional
scrap
bootless
abortive
clapped out
silent
turned off
in a state of disrepair
no good
doesn't work
coming unglued
screwed up
coming unstuck
gone to pot
wrecked
smashed
injured
hurt
spoiled
US
marred
destroyed
spoilt
UK
toast
totaled
wiped out
beat-up
dashed
lost
defeated
devastated
tumbledown
ramshackle
crumbling
harmed
in ruins
in flames
gone to rack and ruin
at an end
washed up
falling to pieces
down the tubes
down for the count
down the drain
past its best
scratched
dented
darned
debilitated
dinged
snafued
bent
flubbed
loused up
messed up
glitched
in smithereens
in poor condition
fouled up
mucked up
wounded
no go
on the bum
shattered
through
crushed
over
bankrupt
beaten
undone
drained
thwarted
empty
liquidated
over with
in pieces
dead and buried
over the hill
played out
gone to the wall
past it
washed-up
wound up
derelict
in shreds
in tatters
in ashes
dead in the water
ruinous
disintegrating
decaying
neglected
shambly
uncared-for
decrepit
deteriorated
munted
shacky
blasted
decayed
run down
battered
botched
mutilated
robbed
uninhabited
plundered
pillaged
harried
abandoned
falling apart
defaced
ill-maintained
badly maintained
poorly maintained
worse for wear
defunct
cooked
ended
extinct
floored
on the skids
out of circulation
burned out
belly-up
out of business
down and out
all washed up
more ❯
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inefficacious
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inefficaciously
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inefficaciously
inefficacy
inefficiencies
inefficiency
inefficient
inefficiently
inefficacies
ineffectualness
ineffectually
ineffectuality
ineffectual
ineffective person
13-letter Words Starting With
i
in
ine
inef
ineff
ineffi
ineffic
ineffica
inefficac
inefficaci
inefficacio
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