EFFICACY Antonyms
There are 5 antonyms of the word
efficacy.
(opposite meanings)
Best Opposite Words For EFFICACY
| Expand? | Word | Save? | Synonyms.. | 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 | ||||||||
