203 entries under adjective topic. ×

3
concerned(thoughtful, sober, cautious, attentive)
3
defensive(alert, careful, caring, sheltered)
3
discerning(understanding, cool, reasonable, keen)
3
hawk-eyed
3
intelligent(cool, reasonable, sharp, bright)
3
interested(alert, intelligent, considerate, responsive)
3
light
3
meticulous(careful, thoughtful, sober, cautious)
3
on one's guard(expression, idiom, care, caution)
3
on the watch(expression, idiom, adverb, alert)
3
particular(thoughtful, sober, cautious, prudent)
3
perceptive(understanding, cool, sharp, bright)
3
responsible
3
sagacious(understanding, cool, reasonable, sensible)
3
sage(understanding, cool, reasonable, sensible)
3
sensible(understanding, cool, reasonable, keen)
2
alive to(expression, understanding, keen, sensible)
2
anxious(alert, eager, careful, attentive)
2
apprehensive(cool, deliberate, excited, ready)
2
bright(cool, sharp, lively, alert)
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APASmart Define. (2015). vigilant thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/vigilant/thesaurus/synonyms
ChicagoSmart Define. 2015. "vigilant thesaurus" https://smartdefine.org/vigilant/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, vigilant thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/vigilant/thesaurus/synonyms>.
MLASmart Define. "vigilant thesaurus" 10 April 2015. Web. 27 September 2026. <https://smartdefine.org/vigilant/thesaurus/synonyms>