Synonyms|139Antonyms|1|Broader|0Narrower|0Related|22

30 entries under keen topic. ×

8
wakeful(adjective, anxious, alert, careful)
8
watchful(adjective, alert, careful, disturbed)
7
sleepless(adjective, anxious, careful, restless)
7
wide-awake(adjective, anxious, alert, careful)
6
alert(adjective, careful, restless, cautious)
5
attentive(adjective, alert, careful, cautious)
3
observant(adjective, alert, careful, cautious)
3
open-eyed(adjective, anxious, alert, careful)
3
wary(adjective, alert, careful, cautious)
2
careful(adjective, alert, cautious, attentive)
2
on the ball(expression, adjective, idiom, alert)
2
on the job(expression, adjective, idiom, anxious)
2
sharp(anxious, alert, careful, attentive)
1
acute(anxious, alert, careful, cautious)
1
agog(anxious, alert, careful, cautious)
1
anxious(alert, careful, attentive, watchful)
1
aware(adjective, alert, careful, attentive)
1
cautious(adjective, alert, careful, attentive)
1
circumspect(adjective, alert, careful, cautious)
1
guarded(adjective, anxious, alert, careful)
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APASmart Define. (2015). unsleeping thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/unsleeping/thesaurus/synonyms
ChicagoSmart Define. 2015. "unsleeping thesaurus" https://smartdefine.org/unsleeping/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, unsleeping thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/unsleeping/thesaurus/synonyms>.
MLASmart Define. "unsleeping thesaurus" 14 April 2015. Web. 29 September 2026. <https://smartdefine.org/unsleeping/thesaurus/synonyms>