EFFICACY Antonyms
There are 5 antonyms of the word
efficacy.
(opposite meanings)
Best Opposite Words For EFFICACY
| Rank | Word | Save? | Synonyms.. | Usage | Type | |
|---|---|---|---|---|---|---|
| 1 | inefficacy | nounn | ||||
| 2 | impotence | nounn | ||||
| 3 | ineffectiveness | nounn | ||||
| 4 | inefficiency | nounn | ||||
| 5 | uselessness | nounn |
