- Definitions|2
- Thesaurus|2.6k
- Abbreviations|0
64 entries under adjective topic. ×
| powerful(strong, fit, effective, successful) | |
| strong(fit, successful) | |
| effective(strong, fit, successful, productive) | |
| effectual(strong, fit, successful) | |
| efficient(strong, weak, fit, delicate) | |
| potent(strong, weak, soft, fit) | |
| successful(strong, fit) | |
| competent(strong, fit, successful) | |
| efficacious | |
| forceful(weak, mild, powerful, effective) | |
| fruitful(strong, fit, successful) | |
| impressive(powerful, influential) | |
| productive(strong, fit, successful) | |
| able(strong, fit, slow, inadequate) | |
| awesome | |
| cogent | |
| decisive | |
| practical | |
| profitable(strong, fit, successful) | |
| useful(strong, fit, successful) |
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Ineffective on
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| APA | Smart Define. (2016). ineffective thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/ineffective/thesaurus/antonyms |
| Chicago | Smart Define. 2016. "ineffective thesaurus" https://smartdefine.org/ineffective/thesaurus/antonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2016, ineffective thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/ineffective/thesaurus/antonyms>. |
| MLA | Smart Define. "ineffective thesaurus" 29 March 2016. Web. 23 September 2026. <https://smartdefine.org/ineffective/thesaurus/antonyms> |