140 entries under attentive topic. ×

4
all ears(expression, adjective, sharp, bright, lively)
4
considering(adjective, intelligent, watchful, sharp-eyed)
4
eagle-eyed(adjective, intelligent, watchful, sharp-eyed)
4
fascinated(adjective, considerate, responsive, aware)
4
hearkening(adjective, observant)
4
hip(adjective, lively, familiar, wise, knowledgeable)
4
immersed(adjective, set, deep, caring, thoughtful)
4
on one's toes(expression, adjective, idiom, lively)
3
cagey(adjective, bright, lively, careful, cautious)
3
eager(adjective, strong, keen, intense, energetic)
3
preventive(adjective, careful, protective)
3
scrutinizing
3
unsleeping(adjective, keen, careful, restless, cautious)
3
with it(expression, adjective, understanding, keen, sharp)
2
agog(adjective, strong, keen, intense, enthusiastic)
2
apprehensive(adjective, deliberate, excited, ready, anxious)
2
au courant(expression, adjective, understanding, keen, sensible)
2
clear-sighted(intelligent, wise, watchful, insightful)
2
conversant(adjective, understanding, keen, sensible, certain)
2
defensive(adjective, careful, protective)
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APASmart Define. (2016). alert thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/alert/thesaurus/synonyms
ChicagoSmart Define. 2016. "alert thesaurus" https://smartdefine.org/alert/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, alert thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/alert/thesaurus/synonyms>.
MLASmart Define. "alert thesaurus" 26 February 2016. Web. 27 September 2026. <https://smartdefine.org/alert/thesaurus/synonyms>