| dull(adjective, calm, smart, indifferent, active) | |
| half ass | |
| blunt | |
| obtuse(adjective, calm, indifferent) | |
| fatuous(adjective, stupid) | |
| slow | |
| idiotic(adjective, calm, indifferent) | |
| stupid(adjective, calm, indifferent) | |
| apathetic(adjective, calm, indifferent) | |
| disinterested | |
| reluctant(adjective, calm, indifferent) | |
| unenthusiastic(adjective, calm, indifferent, enthusiastic, caring) | |
| ignorant(adjective, calm, indifferent) | |
| dead in the water | |
| uninterested(adjective, calm, indifferent) | |
| indifferent(adjective, calm) | |
| brain-dead | |
| silly | |
| unintelligent(adjective, slow) | |
| bubbleheaded |
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| APA | Smart Define. (2016). keen thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/keen/thesaurus/antonyms |
| Chicago | Smart Define. 2016. "keen thesaurus" https://smartdefine.org/keen/thesaurus/antonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2016, keen thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/keen/thesaurus/antonyms>. |
| MLA | Smart Define. "keen thesaurus" 29 March 2016. Web. 24 September 2026. <https://smartdefine.org/keen/thesaurus/antonyms> |