| incautious(adjective, open, careless) | |
| incompetent(adjective, clumsy) | |
| inept(adjective, clumsy) | |
| inexperienced(adjective, quiet) | |
| inexpert(adjective, clumsy) | |
| insentient | |
| insufficient(adjective, bad, poor) | |
| intolerable(adjective, bad, poor) | |
| open(adjective, careless) | |
| poor(adjective, bad) | |
| quiet | |
| rash(adjective, open, careless) | |
| reckless(adjective, open, careless) | |
| silent(adjective, quiet) | |
| silly(adjective, open, careless) | |
| stupid(adjective, open, careless) | |
| thoughtless(adjective, open, careless) | |
| unable(adjective, clumsy) | |
| unacceptable(adjective, bad, poor) | |
| uncareful(adjective, open, careless) |
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| APA | Smart Define. (2015). hep thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/hep/thesaurus/antonyms |
| Chicago | Smart Define. 2015. "hep thesaurus" https://smartdefine.org/hep/thesaurus/antonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2015, hep thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/hep/thesaurus/antonyms>. |
| MLA | Smart Define. "hep thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/hep/thesaurus/antonyms> |