Efficacy Antonyms

Trying to find opposite word for efficacy in English? No problem. Our site contains antonyms of efficacy in 17 different contexts. We have listed all the opposite words for efficacy alphabetically.

enervation

attenuation
debility
depletion
devitalization
enfeeblement
exhaustion
feebleness
frailness
frailty

failure

abortion
bankruptcy
bomb
botch
breakdown
bungle
bust
checkmate
collapse

idleness

dawdling
dilly-dallying
dormancy
droning
goof-off time
hibernation
inactivity
indolence
inertia

impotence

barrenness
erectile dysfunction
infecundity
infertility
unproductiveness

inability

disqualification
failure
frailty
impotence
inadequacy
inaptitude
incapability
incapacitation
incapacity

inactivity

dawdling
dilly-dallying
dormancy
droning
goof-off time
hibernation
idleness
indolence
inertia

inadequacy

blemish
dearth
defalcation
defectiveness
deficiency
deficit
drawback
failing
faultiness

incapacity

disqualification
inability
incapability
insufficiency

incompetence

inability
inadequacy
ineptitude
inexperience

ineffectiveness

feebleness
helplessness
impotence
inadequacy
incapability
ineffectualness
inefficacy
infirmity
powerlessness

inefficacy

feebleness
helplessness
impotence
inadequacy
incapability
ineffectiveness
ineffectualness
infirmity
powerlessness

inefficiency

carelessness
disorganization
inability
incapability
wastefulness

lethargy

apathy
coma
disinterest
disregard
drowsiness
dullness
hebetude
heedlessness
idleness

powerlessness

disqualification
failure
frailty
impotence
inadequacy
inaptitude
incapability
incapacitation
incapacity

unproductiveness

childlessness
fruitlessness
impotence
infecundity
infertility
unfruitfulness

uselessness

bootlessness
emptiness
frivolousness
fruitlessness
hollowness
idleness
ineffectiveness
ineffectuality
meaninglessness

weakness

Achilles heel
appetite
blemish
chink in armor
debility
decrepitude
deficiency
delicacy
enervation

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