EFFICACIOUS Antonyms
There are 11 antonyms of the word
efficacious.
(opposite meanings)
Best Opposite Words For EFFICACIOUS
| Rank | Word | Save? | Synonyms.. | Usage | Type | |
|---|---|---|---|---|---|---|
| 1 | feeble | adjectiveadj | ||||
| 2 | fruitless | verb, adjectivev, adj | ||||
| 3 | impotent | adjectiveadj | ||||
| 4 | ineffective | adjectiveadj | ||||
| 5 | inefficient | adjectiveadj | ||||
| 6 | powerless | adjectiveadj | ||||
| 7 | unproductive | adjectiveadj | ||||
| 8 | unsuccessful | adjectiveadj | ||||
| 9 | useless | adjectiveadj | ||||
| 10 | weak | adjectiveadj | ||||
| 11 | inefficacious | adjectiveadj |
