62 entries under vigilant topic. ×

4
ready(adjective, sharp, bright, lively, active)
4
sharp-eyed(adjective, alert, intelligent, attentive, watchful)
4
strict(adjective, exact, careful, regular, honorable)
3
fastidious(adjective, careful, thoughtful, sober, honorable)
3
on the job(expression, adjective, idiom, sharp, bright)
3
precise(adjective, careful, thoughtful, sober, refined)
2
on the qui vive(expression, adjective, idiom, sharp, bright)
2
perceptive(adjective, sharp, bright, lively, alert)
2
suspicious(adjective, alert, careful, shy, considerate)
2
wide-awake(adjective, sharp, bright, lively, alert)
1
cool(adjective, deliberate, alert, familiar, thoughtful)
1
glued(adjective, alert, careful, caring, thoughtful)
1
hooked(adjective, alert, careful, caring, thoughtful)
1
keen(adjective, kind, alert, careful, caring)
1
not missing a trick(expression, adjective, idiom, alert, careful)
1
observative(adjective, kind, alert, careful, caring)
1
on the watch(expression, adjective, idiom, adverb, alert)
1
see after(expression, adjective, alert, careful, cautious)
1
see to(expression, adjective, alert, careful, cautious)
1
sensitive(adjective, kind, friendly, alert, caring)
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APASmart Define. (2015). heedful thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/heedful/thesaurus/synonyms
ChicagoSmart Define. 2015. "heedful thesaurus" https://smartdefine.org/heedful/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2015, heedful thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/heedful/thesaurus/synonyms>.
MLASmart Define. "heedful thesaurus" 13 April 2015. Web. 30 September 2026. <https://smartdefine.org/heedful/thesaurus/synonyms>