| innumerable(adjective, infinite, many) | |
| inscrutability(noun, abstruseness, inscrutableness, rebus) | |
| inscrutableness(noun, abstruseness, rebus) | |
| intimate(stupid, superficial) | |
| isolated | |
| magic number(noun, expression, abstruseness, inscrutableness, rebus) | |
| middle of nowhere | |
| mindboggler(noun, abstruseness, inscrutableness, rebus) | |
| murky | |
| new | |
| nonnative | |
| nonresident | |
| not domestic | |
| not for publication(expression, idiom, open) | |
| not native | |
| one | |
| one and only | |
| opaque | |
| open-ended | |
| own |
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| APA | Smart Define. (2015). known thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/known/thesaurus/antonyms |
| Chicago | Smart Define. 2015. "known thesaurus" https://smartdefine.org/known/thesaurus/antonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2015, known thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/known/thesaurus/antonyms>. |
| MLA | Smart Define. "known thesaurus" 14 April 2015. Web. 26 September 2026. <https://smartdefine.org/known/thesaurus/antonyms> |