79 entries under adjective topic. ×
| dysfunctional(work, feature, state, function) | |
| useless(bad, sensible, awkward, valuable) | |
| bad(awkward, useless) | |
| worthless(bad, awkward, useless, valuable) | |
| unusable(bad, sensible, awkward, useless) | |
| futile | |
| ineffectual | |
| unserviceable | |
| awkward(bad, useless) | |
| unavailing | |
| unprofitable | |
| disadvantageous(bad, awkward, useless) | |
| feckless | |
| fruitless | |
| ineffective(strong, fit, successful) | |
| inefficient(sound, well, competent, wasteful) | |
| inutile | |
| otiose | |
| destructive | |
| detrimental |
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| APA | Smart Define. (2016). useful thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/useful/thesaurus/antonyms |
| Chicago | Smart Define. 2016. "useful thesaurus" https://smartdefine.org/useful/thesaurus/antonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2016, useful thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/useful/thesaurus/antonyms>. |
| MLA | Smart Define. "useful thesaurus" 5 January 2016. Web. 25 September 2026. <https://smartdefine.org/useful/thesaurus/antonyms> |