efficacy
How to pronounce efficacy:
Synonyms for efficacy:
ability
effectiveness
effectuality
effectualness
efficacious
efficaciousness
efficacity
efficiency
fruitfulness
inefficacious
potency
power
productiveness
strength
success
use
usefulness
value
vigour
virtue
Antonyms for efficacy:
apathy
asthenia
carelessness
debilitation
debility
decrepitude
delicacy
delicateness
disability
disorder
disorderedness
disorderliness
disorganisation
disorganization
disregard
enervation
enfeeblement
exhaustion
failure
faintness
fatigue
feebleness
fragility
frailness
fruitlessness
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Here are some other common 4-syllable words.
- analogous
- anomaly
- interviewee
- enthusiasm
- apathetic
- resurrection
- reliably
- postulation
- pessimistic
- conceivable
- unfurlable
- nefarious
- chrysanthemums
- solemnity
- persephone
- liberated
- fascination
- eclectism
- differentiate
- psychopathy
- hesitating
- capricious
- impoverished
- enlightening
- bureaucracy
- affidavit
- accurately
- toxicity
- maculated
- unawakened
- discontinue
- composition
- underpinning
- patronizing
- malevolent
- calculating
- accidently
- obnoxious
- hospitable
- grammatical
- vicarious
- mediator
- consummation
- Anglocentric
- sinopias
- excitable
- enchiladas
- subjugation
- resistable
- receptiveness
- … more
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