| work-shy | |
| insensitive | |
| mild | |
| unconcerned(adjective, calm, indifferent) | |
| dumb | |
| lacking interest | |
| subpar | |
| insouciant | |
| lukewarm | |
| brainless | |
| casual | |
| good | |
| gray | |
| grey | |
| inferior | |
| laugh | |
| mindless | |
| moderate | |
| nonchalant | |
| nostalgic |
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| APA | Smart Define. (2016). keen thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/keen/thesaurus/antonyms |
| Chicago | Smart Define. 2016. "keen thesaurus" https://smartdefine.org/keen/thesaurus/antonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2016, keen thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/keen/thesaurus/antonyms>. |
| MLA | Smart Define. "keen thesaurus" 29 March 2016. Web. 26 September 2026. <https://smartdefine.org/keen/thesaurus/antonyms> |