31 entries under adjective topic. ×
| powerful | |
| valid(right, false, genuine, illegal) | |
| good | |
| healthy | |
| legitimate(false, improper, authentic, valid) | |
| real(obscure, false, uncertain, genuine) | |
| sound | |
| true(sound, reasonable, uncertain, dishonest) | |
| legal | |
| logical(sound, reasonable, obscure, illogical) | |
| strong | |
| authentic(fake, false) | |
| cogent | |
| relatable(useless, unfit, inapplicable) | |
| correct(wrong, false) | |
| reasonable(sound, senseless, irrational, unsound) | |
| solid | |
| well | |
| worthwhile | |
| worthy |
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| APA | Smart Define. (2016). invalid thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/invalid/thesaurus/antonyms |
| Chicago | Smart Define. 2016. "invalid thesaurus" https://smartdefine.org/invalid/thesaurus/antonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2016, invalid thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/invalid/thesaurus/antonyms>. |
| MLA | Smart Define. "invalid thesaurus" 29 March 2016. Web. 22 September 2026. <https://smartdefine.org/invalid/thesaurus/antonyms> |