1
regardful(adjective, considerate, responsive, aware, helpful)
1
safe(adjective, restrained, careful, reserved, prudent)
1
shrewd(adjective, careful, thoughtful, wise, prudent)
1
spirited(adjective, sharp, bright, lively, alert)
1
suspicious(adjective, restrained, alert, hesitant, reserved)
1
switched on(expression, adjective, sharp, bright, lively)
1
taking it easy(expression, adjective, idiom, careful, prudent)
1
taking it slow(expression, adjective, idiom, careful, prudent)
1
tentative(adjective, careful, thoughtful, prudent, watchful)
1
thinking twice(expression, adjective, careful, cautious, prudent)
1
unsleeping(adjective, keen, anxious, alert, careful)
1
waiting on(expression, adjective, keen, alert, careful)
1
walking on eggs(expression, adjective, idiom, careful, cautious)
1
watching out(expression, adjective, careful, cautious, prudent)
1
wide awake
1
wired(adjective, sharp, bright, lively, alert)
1
wise(adjective, sharp, bright, lively, alert)
1
with eyes peeled(expression, adjective, idiom, keen, restrained)
1
with it(expression, adjective, sharp, bright, lively)
1
with open eyes(expression, idiom)
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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>