1
lookout
1
watcher
1
watchman
1
witness
1
acceptant(adjective, open, friendly, sympathetic, ready)
1
acceptive(adjective, open, friendly, sympathetic, ready)
1
acquainted(adjective, understanding, sensible, knowledgeable, perceptive)
1
acquiescent(adjective, compliant, submissive, docile, deferential)
1
all eyes
1
amenable(adjective, open, friendly, sympathetic, sensitive)
1
anxious(adjective, strong, kind, keen, friendly)
1
appreciative(adjective, aware)
1
approachable(adjective, open, friendly, sympathetic, ready)
1
au courant(expression, adjective, understanding, cool, sensible)
1
aux aguets
1
be up on(careful, knowledgeable, cautious, aware, attentive)
1
biddable(adjective, compliant, submissive, docile, deferential)
1
brilliant(adjective, cool, smart, bright, fast)
1
calculating(careful, cautious, prudent, tactful, circumspect)
1
canny(adjective, cool, kind, sharp, friendly)
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APASmart Define. (2016). observant thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/observant/thesaurus/synonyms
ChicagoSmart Define. 2016. "observant thesaurus" https://smartdefine.org/observant/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, observant thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/observant/thesaurus/synonyms>.
MLASmart Define. "observant thesaurus" 29 March 2016. Web. 24 September 2026. <https://smartdefine.org/observant/thesaurus/synonyms>