Synonyms|451Antonyms|158|Broader|9Narrower|3Related|418

47 entries under sleepless topic. ×

1
watchful(adjective, understanding, keen, sensible, certain)
1
wise to(expression, adjective, understanding, keen, sensible)
1
with it(expression, adjective, understanding, keen, sensible)
1
witting(adjective, understanding, keen, sensible, certain)
0
conversant(adjective, understanding, keen, sensible, certain)
0
insomniac
0
wide awake(expression, awake, insomniac)
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APASmart Define. (2015). known thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/known/thesaurus/synonyms
ChicagoSmart Define. 2015. "known thesaurus" https://smartdefine.org/known/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, known thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/known/thesaurus/synonyms>.
MLASmart Define. "known thesaurus" 14 April 2015. Web. 28 September 2026. <https://smartdefine.org/known/thesaurus/synonyms>