22 entries under irregular topic. ×
| artificial(adjective, fake, unusual, unreasonable) | |
| unnatural(adjective, reasonable, unusual, unreasonable, regular) | |
| abnormal(adjective, unusual, unreasonable) | |
| affected(verb, adjective, unusual, true, unreasonable) | |
| refined(adjective, unusual, unreasonable) | |
| different(adjective, unusual, unreasonable) | |
| uncommon(adjective, unusual, unreasonable) | |
| unusual(adjective, unreasonable) | |
| atypical(adjective, unusual, unreasonable) | |
| fixed(adjective, unusual, unreasonable) | |
| foreign(adjective, unusual, unreasonable) | |
| pretended(adjective, unusual, unreasonable) | |
| changing(adjective, unusual, unreasonable) | |
| exceptional(adjective, unusual, unreasonable) | |
| extraordinary(adjective, unusual, unreasonable) | |
| modified(adjective, unusual, unreasonable) | |
| inconsistent(adjective, unusual, unreasonable) | |
| infrequent(adjective, unusual, unreasonable) | |
| particular(adjective, unusual, unreasonable) | |
| rare(adjective, unusual, unreasonable) |
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| APA | Smart Define. (2016). natural thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/natural/thesaurus/antonyms |
| Chicago | Smart Define. 2016. "natural thesaurus" https://smartdefine.org/natural/thesaurus/antonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2016, natural thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/natural/thesaurus/antonyms>. |
| MLA | Smart Define. "natural thesaurus" 15 February 2016. Web. 26 September 2026. <https://smartdefine.org/natural/thesaurus/antonyms> |