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

96 entries under expression topic. ×

11
on guard(adjective, idiom, adverb, keen)
10
wide awake(adjective, sympathetic, wise, attentive)
8
on the ball(adjective, idiom, keen, sharp)
8
on the lookout(adjective, idiom, sharp, lively)
4
on the watch(adjective, idiom, adverb, attention)
3
all ears(adjective, sharp, bright, lively)
3
on the job(adjective, idiom, keen, sharp)
2
not missing a trick(adjective, idiom, sympathetic, alert)
2
on the alert(adjective, idiom, alert, careful)
2
on the qui vive(adjective, idiom, keen, sharp)
2
tuned in(adjective, understanding, cool, keen)
2
with it(adjective, understanding, cool, sharp)
1
au courant(adjective, understanding, cool, sensible)
1
down with(adjective, sensible, sympathetic, knowledgeable)
1
ear to the ground(idiom, understanding, keen, sharp)
1
fast on the draw(idiom, sharp, bright, lively)
1
good hands(sharp, bright, lively, wise)
1
having foresight(cautious, tactful, circumspect)
1
heads up(sharp, bright, lively, alert)
1
hep to(adjective, understanding, cool, sensible)
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APASmart Define. (2016). observant thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/observant/thesaurus/synonyms
ChicagoSmart Define. 2016. "observant thesaurus" https://smartdefine.org/observant/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, observant thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/observant/thesaurus/synonyms>.
MLASmart Define. "observant thesaurus" 29 March 2016. Web. 21 September 2026. <https://smartdefine.org/observant/thesaurus/synonyms>