68 entries under alert topic. ×

1
lively(sharp, bright, aware, attentive)
1
looking for(expression, keen, anxious, careful)
1
looking to(expression, keen, anxious, careful)
1
not missing a trick(expression, adjective, idiom, careful)
1
on alert(expression, keen, anxious, careful)
1
on toes(expression, adjective, keen, anxious)
1
perceptive(adjective, sharp, bright, lively)
1
prepared(adjective, set, ready, careful)
1
quick(sharp, bright, lively, aware)
1
see after(expression, adjective, careful, cautious)
1
see to(expression, adjective, careful, cautious)
1
sharp(adjective, keen, bright, lively)
1
spirited(sharp, bright, lively, aware)
1
suspicious(adjective, careful, considerate, cautious)
1
switched on(expression, sharp, bright, lively)
1
unsleeping(adjective, keen, anxious, careful)
1
waiting on(expression, keen, anxious, careful)
1
wakeful(adjective, keen, anxious, careful)
1
wise(sharp, bright, lively, aware)
1
with eyes peeled(expression, adjective, idiom, keen, anxious)
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APASmart Define. (2015). on guard thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/on_guard/thesaurus/synonyms
ChicagoSmart Define. 2015. "on guard thesaurus" https://smartdefine.org/on_guard/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, on guard thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/on_guard/thesaurus/synonyms>.
MLASmart Define. "on guard thesaurus" 14 April 2015. Web. 29 September 2026. <https://smartdefine.org/on_guard/thesaurus/synonyms>