efficacy

The word “efficacy” has 4 syllables: ef-fi-ca-cy

It's pronounced as /ˈɛfɪkəsi/

What is synonym and antonym for efficacy?

In the thesaurus, “efficacy” has 28 synonyms and 21 antonyms.

Here are synonyms and antonyms for efficacy along with examples of usage in sentences.

Synonyms for efficacy

ability
adequacy
capability
capableness
capacity
competence
edge
effect
effectiveness
effectualness
efficaciousness
efficacity
efficiency
energy
force
influence
performance
potency
power
productiveness
puissance
strength
success
sufficiency
use
vigor
virtue
weight

Antonyms for efficacy

enervation
failure
idleness
impotence
inability
inactivity
inadequacy
inadequateness
incapacity
incompetence
incompetency
ineffectiveness
ineffectuality
ineffectualness
inefficacy
inefficiency
lethargy
powerlessness
unproductiveness
uselessness
weakness

Meanings of efficacy

noun
1. Ability to produce a desired effect under ideal testing conditions.
2. Degree of ability to produce a desired effect.

Example Sentences

The efficacy of the vaccine was demonstrated by the significant decrease in infection rates.
Studies have shown the efficacy of mindfulness meditation in reducing stress and anxiety.
The company conducted trials to assess the efficacy of its new product before launching it to the market.
The therapist explained the efficacy of cognitive-behavioral therapy in treating various mental health conditions.
Public health campaigns aim to increase awareness about the efficacy of handwashing in preventing the spread of diseases.

On this page you'll find 49 synonyms, antonyms, or another words to efficacy, such as: ability, adequacy, capability, capableness, capacity, competence, edge.

Make sure to choose synonyms and antonyms that are appropriate for the context of the sentence.