67 entries under observant topic. ×

8
aware(adjective, understanding, cool, kind, sound)
7
sensitive(adjective, understanding, kind, keen, sharp)
6
rational(adjective, understanding, hard, sound, tough)
5
discreet(adjective, understanding, kind, reasonable, keen)
5
understanding(adjective, sound, sharp, smart, bright)
4
attentive(adjective, understanding, kind, reasonable, friendly)
4
cognizant(adjective, understanding, cool, sound, reasonable)
3
conscious(adjective, understanding, cool, reasonable, keen)
3
mindful(adjective, understanding, kind, friendly, polite)
3
penetrative(adjective, understanding, keen, sharp, smart)
3
responsive(adjective, understanding, kind, keen, sharp)
3
sentient(adjective, understanding, cool, reasonable, significant)
2
apperceptive(perceptive, insightful)
2
apprised(adjective, perceptive, aware, insightful)
2
awake(adjective, understanding, cool, keen, sharp)
2
intuitive(adjective, understanding, sound, keen, sharp)
1
alive to(verb, expression, phrasal verb, perceptive)
1
conversant(adjective, understanding, cool, reasonable, significant)
1
ear to the ground(expression, adjective, idiom, understanding, keen)
1
in right mind(expression, adjective, idiom, understanding, reasonable)
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APASmart Define. (2016). astute thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/astute/thesaurus/synonyms
ChicagoSmart Define. 2016. "astute thesaurus" https://smartdefine.org/astute/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, astute thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/astute/thesaurus/synonyms>.
MLASmart Define. "astute thesaurus" 22 March 2016. Web. 28 September 2026. <https://smartdefine.org/astute/thesaurus/synonyms>