55 entries under adjective topic. ×

19
vigilant(feature, characteristic, sharp, bright)
18
observant(feature, characteristic, keen, detail)
17
alert(feature, characteristic, keen, sharp)
17
watchful(feature, characteristic, keen, sharp)
13
attentive(feature, characteristic, keen, detail)
13
aware(feature, characteristic, keen, detail)
12
heedful(feature, characteristic, sharp, bright)
10
wakeful(keen, anxious, alert, careful)
9
regardful(feature, characteristic, detail)
6
wary(keen, sharp, alert, careful)
6
wide-awake(keen, anxious, alert, careful)
5
argus-eyed
5
careful(keen, sharp, alert, cautious)
5
intent(feature, characteristic, detail)
4
on the ball(expression, idiom, keen, alert)
4
perceptive(alert, watchful)
3
active
3
all ears(expression, alert, careful, cautious)
3
circumspect(keen, alert, careful, cautious)
3
on guard(expression, keen, anxious, alert)
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APASmart Define. (2015). open-eyed thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/open-eyed/thesaurus/synonyms
ChicagoSmart Define. 2015. "open-eyed thesaurus" https://smartdefine.org/open-eyed/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, open-eyed thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/open-eyed/thesaurus/synonyms>.
MLASmart Define. "open-eyed thesaurus" 14 April 2015. Web. 27 September 2026. <https://smartdefine.org/open-eyed/thesaurus/synonyms>