Synonyms|185Antonyms|49|Broader|0Narrower|0Related|5

148 entries under adjective topic. ×

2
awake(alert, careful, considerate, disturbed)
2
cagey(sharp, lively, restrained, careful)
2
careful(adverb, keen, sharp, lively)
2
hawk-eyed
2
keen-eyed
2
on the alert(alert, careful, disturbed, aware)
2
on the job(expression, idiom, sharp, lively)
2
on the qui vive(expression, idiom, sharp, lively)
2
prudent(smooth, restrained, alert, careful)
2
sharp-eyed
2
sleepless(keen, anxious, alert, careful)
2
wide-awake(keen, sharp, lively, alert)
1
active(sharp, bright, lively, alert)
1
acute(keen, anxious, alert, careful)
1
agog(keen, anxious, alert, careful)
1
alive(careful, restless, disturbed, sleepless)
1
anxious(keen, alert, careful, attentive)
1
bright(sharp, lively, alert, aware)
1
calculating(restrained, careful, reserved, prudent)
1
canny(smooth, restrained, wise, hesitant)
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APASmart Define. (2015). on the lookout thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/on_the_lookout/thesaurus/synonyms
ChicagoSmart Define. 2015. "on the lookout thesaurus" https://smartdefine.org/on_the_lookout/thesaurus/synonyms (accessed October 1, 2026).
HarvardSmart Define 2015, on the lookout thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/on_the_lookout/thesaurus/synonyms>.
MLASmart Define. "on the lookout thesaurus" 14 April 2015. Web. 1 October 2026. <https://smartdefine.org/on_the_lookout/thesaurus/synonyms>