98 entries under sensitive topic. ×

40
alert(adjective, feature, characteristic, understanding, strong)
23
careful(adjective, kind, keen, sharp, bright)
22
perceptive(adjective, person, understanding, strong, open)
20
aware(adjective, feature, characteristic, understanding, cool)
19
sharp(adjective, understanding, strong, cool, keen)
16
cautious(adjective, adverb, kind, keen, sensible)
16
keen(adjective, understanding, strong, sharp, smart)
13
prudent(adjective, kind, reasonable, sensible, delicate)
11
awake(adjective, understanding, cool, reasonable, keen)
11
quick(adjective, understanding, cool, keen, sharp)
11
thoughtful(adjective, kind, reasonable, sensible, delicate)
10
discerning(adjective, understanding, cool, reasonable, keen)
8
astute(adjective, understanding, cool, kind, keen)
7
conscious(adjective, understanding, cool, keen, sharp)
7
interested(adjective, strong, open, friendly, intense)
7
penetrating(adjective, understanding, strong, sharp, smart)
6
acute(adjective, understanding, strong, keen, sharp)
5
bright(adjective, open, cool, sharp, friendly)
5
considerate(adjective, kind, reasonable, friendly, sensible)
5
discreet(adjective, understanding, kind, keen, sharp)
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APASmart Define. (2016). observant thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/observant/thesaurus/synonyms
ChicagoSmart Define. 2016. "observant thesaurus" https://smartdefine.org/observant/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, observant thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/observant/thesaurus/synonyms>.
MLASmart Define. "observant thesaurus" 29 March 2016. Web. 20 September 2026. <https://smartdefine.org/observant/thesaurus/synonyms>