Synonyms|471Antonyms|205|Broader|3Narrower|9Related|940

2 entries under alert topic. ×

4
wakeful(adjective, restless)
3
lively(adjective, dull, lethargic)
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APASmart Define. (2016). sleepy thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/sleepy/thesaurus/antonyms
ChicagoSmart Define. 2016. "sleepy thesaurus" https://smartdefine.org/sleepy/thesaurus/antonyms (accessed September 27, 2026).
HarvardSmart Define 2016, sleepy thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/sleepy/thesaurus/antonyms>.
MLASmart Define. "sleepy thesaurus" 18 February 2016. Web. 27 September 2026. <https://smartdefine.org/sleepy/thesaurus/antonyms>