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

62 entries under alert topic. ×

9
watchful(adjective, adverb, sharp, lively)
8
observant(adjective, adverb, sharp, lively)
8
wary(adjective, adverb, sharp, lively)
7
on guard(expression, adjective, adverb, sharp, lively)
6
attentive(adjective, keen, sharp, lively, restrained)
6
cautious(adjective, adverb, keen, restrained)
4
heedful(adjective, adverb, sharp, lively)
4
mindful(adjective, adverb, careful, considerate)
3
aware(adjective, keen, careful, considerate)
3
guarded(adjective, adverb, keen, careful)
3
on the ball(expression, adjective, sharp, lively)
3
on the watch(expression, adjective, idiom, adverb)
3
open-eyed(adjective, keen, sharp, bright)
3
sharp(adjective, keen, bright, lively)
3
wakeful(adjective, keen, sharp, careful)
2
awake(adjective, careful, considerate, disturbed)
2
careful(adjective, adverb, keen, sharp, lively)
2
on the alert(adjective, careful, disturbed, aware)
2
prudent(adjective, smooth, restrained, careful)
2
sleepless(adjective, keen, anxious, careful)
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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>