70 entries under adjective topic. ×
| unclear | |
| undercover(open, secret, spy) | |
| unnamed | |
| ambiguous(clear, plain, unknown) | |
| concealed | |
| confidential(secret, untrustworthy) | |
| false(open, sound, right, wrong) | |
| hidden(clear, open, plain, unknown) | |
| hush-hush(secret, public) | |
| arcane(secret, hidden) | |
| cloudy | |
| cryptic | |
| dusky | |
| enigmatic | |
| esoteric(obscure, mysterious) | |
| exotic | |
| gloomy | |
| indefinable | |
| indescribable | |
| indeterminate |
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| APA | Smart Define. (2015). known thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/known/thesaurus/antonyms |
| Chicago | Smart Define. 2015. "known thesaurus" https://smartdefine.org/known/thesaurus/antonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2015, known thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/known/thesaurus/antonyms>. |
| MLA | Smart Define. "known thesaurus" 14 April 2015. Web. 27 September 2026. <https://smartdefine.org/known/thesaurus/antonyms> |