EFFICACY Antonyms
There are 5 antonyms of the word
efficacy.
(opposite meanings)
Did you mean:
Definition of
EFFICACY
Synonyms of
EFFICACY
Best Opposite Words For EFFICACY
| Word | Save | Syns.. | Usage | Type | ||
|---|---|---|---|---|---|---|
| inefficacy | nounn | |||||
noun • a lack of efficacy | ||||||
| impotence | nounn | |||||
noun • the quality of lacking strength or power; being weak and feeble • an inability (usually of the male animal) to copulate | ||||||
| ineffectiveness | nounn | |||||
noun • lacking the power to be effective | ||||||
| inefficiency | nounn | |||||
noun • unskillfulness resulting from a lack of efficiency | ||||||
| uselessness | nounn | |||||
noun • the quality of having no practical use | ||||||
