| outcast | |
| unsuitable(adjective, appropriate, proper, awkward, inappropriate) | |
| not good | |
| improper(adjective, right, reasonable, awkward, suitable) | |
| inapt(adjective, suitable, incompetent) | |
| incongruous(adjective, out, consistent, absurd) | |
| wrong(adjective, suitable, inappropriate) | |
| indecent | |
| undeserving | |
| unsustainable | |
| inept(adjective, suitable, improper, expert, capable) | |
| inadequate(adjective, awkward, inappropriate) | |
| incapable(adjective, strong, fit) | |
| incompatible(appropriate, proper) | |
| incorrect(adjective, sound, right, awkward, inappropriate) | |
| ineligible(adjective, qualified) | |
| infelicitous | |
| subpar | |
| unacceptable(adjective, good, agreeable, awkward, suitable) | |
| unbecoming(adjective, improper, unsuitable) |
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| APA | Smart Define. (2015). suitable thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/suitable/thesaurus/antonyms |
| Chicago | Smart Define. 2015. "suitable thesaurus" https://smartdefine.org/suitable/thesaurus/antonyms (accessed September 20, 2026). |
| Harvard | Smart Define 2015, suitable thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/suitable/thesaurus/antonyms>. |
| MLA | Smart Define. "suitable thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/suitable/thesaurus/antonyms> |