66 entries under adjective topic. ×
| listless | |
| drowsy | |
| feckless | |
| heavy | |
| helpless(dull, weak, feeble) | |
| incapable(dull, weak, feeble) | |
| indifferent(dull, weak, feeble) | |
| ineffective(dull, weak, feeble) | |
| lackadaisical | |
| languorous | |
| lax | |
| lifeless | |
| nerveless | |
| passive | |
| slack | |
| spiritless | |
| unhealthy(dull, weak, feeble) | |
| abject | |
| disinterested | |
| dispassionate |
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| APA | Smart Define. (2016). vigorous thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/vigorous/thesaurus/antonyms |
| Chicago | Smart Define. 2016. "vigorous thesaurus" https://smartdefine.org/vigorous/thesaurus/antonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2016, vigorous thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/vigorous/thesaurus/antonyms>. |
| MLA | Smart Define. "vigorous thesaurus" 1 April 2016. Web. 26 September 2026. <https://smartdefine.org/vigorous/thesaurus/antonyms> |