Synonyms|648Antonyms|154|Broader|16Narrower|18Related|740

90 entries under sharp topic. ×

41
watchful(adjective, feature, characteristic, understanding, cool)
40
alert(adjective, feature, characteristic, understanding, strong)
38
attentive(adjective, feature, characteristic, understanding, kind)
30
heedful(adjective, feature, characteristic, kind)
29
vigilant(adjective, feature, characteristic, understanding, cool)
23
careful(adjective, kind, keen, bright)
22
perceptive(adjective, person, understanding, strong, open)
20
aware(adjective, feature, characteristic, understanding, cool)
16
wary(adjective, kind, keen, bright)
16
keen(adjective, understanding, strong, smart)
11
awake(adjective, understanding, cool, reasonable, keen)
11
circumspect(adjective, kind, keen, bright)
11
quick(adjective, understanding, cool, keen)
11
on guard(expression, adjective, idiom, adverb, keen)
10
discerning(adjective, understanding, cool, reasonable, keen)
8
astute(adjective, understanding, cool, kind, keen)
8
on the ball(expression, adjective, idiom, keen)
8
on the lookout(expression, adjective, idiom, lively)
7
conscious(adjective, understanding, cool, keen)
7
intelligent(adjective, understanding, cool, smart)
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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>