166 entries under attentive topic. ×

11
observing(adjective, understanding, kind, friendly, attention)
11
on guard(expression, adjective, idiom, adverb, keen)
11
thoughtful(adjective, kind, reasonable, sensible, delicate)
10
discerning(adjective, understanding, cool, reasonable, keen)
10
wide awake(expression, adjective, sympathetic, wise)
8
guarded(adjective, adverb, reasonable, keen, sensible)
8
on the ball(expression, adjective, idiom, keen, sharp)
8
on the lookout(expression, adjective, idiom, sharp, lively)
8
sharp-eyed(adjective, sympathetic, alert, witting)
7
conscious(adjective, understanding, cool, keen, sharp)
7
eagle-eyed(adjective, alert, watchful, sharp-eyed)
7
intelligent(adjective, understanding, cool, sharp, smart)
7
interested(adjective, strong, open, friendly, intense)
7
meticulous(adjective, alert, careful, sober)
7
obedient(adjective, alert, compliant, submissive)
7
penetrating(adjective, understanding, strong, sharp, smart)
7
questioning(adjective, alert, watchful, circumspect)
7
scrupulous(adjective, alert, careful, thoughtful, sober)
6
acute(adjective, understanding, strong, keen, sharp)
6
diligent(adjective, vigilant)
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APASmart Define. (2016). observant thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/observant/thesaurus/synonyms
ChicagoSmart Define. 2016. "observant thesaurus" https://smartdefine.org/observant/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, observant thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/observant/thesaurus/synonyms>.
MLASmart Define. "observant thesaurus" 29 March 2016. Web. 28 September 2026. <https://smartdefine.org/observant/thesaurus/synonyms>