51 entries under adjective topic. ×
| adroit | |
| agile | |
| apt | |
| artful | |
| astute | |
| attentive | |
| aware | |
| canny | |
| capable | |
| careful | |
| cheerful | |
| circumspect | |
| clear | |
| competent | |
| crafty | |
| devious | |
| downy | |
| efficient | |
| foxy | |
| mercurial |
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| APA | Smart Define. (2016). sleepy thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/sleepy/thesaurus/antonyms |
| Chicago | Smart Define. 2016. "sleepy thesaurus" https://smartdefine.org/sleepy/thesaurus/antonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2016, sleepy thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/sleepy/thesaurus/antonyms>. |
| MLA | Smart Define. "sleepy thesaurus" 18 February 2016. Web. 28 September 2026. <https://smartdefine.org/sleepy/thesaurus/antonyms> |