14
restless(adjective, anxious, nervous, content, unsettled)
13
insomniac(noun, adjective, careful, restless, disturbed)
9
alert(adjective, keen, careful, restless, disturbed)
9
wakeful(adjective, keen, anxious, alert, careful)
9
watchful(adjective, keen, alert, careful, restless)
8
vigilant(adjective, alert, careful, restless, disturbed)
7
awake(adjective, careful, restless, disturbed, insomniac)
7
lidless
7
restive(adjective, anxious, nervous, unsettled, restless)
7
uneasy(adjective, anxious, nervous, unsettled, restless)
6
unsettled(adjective, anxious, nervous, restless, uneasy)
6
unsleeping(adjective, keen, anxious, careful, restless)
5
wide-awake(adjective, keen, anxious, alert, careful)
4
attentive(adjective, keen, alert, careful, restless)
4
insomnious
4
jittery
4
wary(adjective, keen, alert, careful, restless)
3
active(adjective, anxious, unsettled, restless, uneasy)
3
disturbed
3
fidgety(adjective, nervous, restless, insomniac)
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APASmart Define. (2015). sleepless thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/sleepless/thesaurus/synonyms
ChicagoSmart Define. 2015. "sleepless thesaurus" https://smartdefine.org/sleepless/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, sleepless thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/sleepless/thesaurus/synonyms>.
MLASmart Define. "sleepless thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/sleepless/thesaurus/synonyms>