56 entries under shrewd topic. ×

45
watchful(adjective, feature, characteristic, understanding, cool)
30
observant(adjective, feature, characteristic, understanding, cool)
26
cautious(adjective, sensible, restrained, alert, careful)
15
aware(adjective, feature, characteristic, understanding, cool)
12
sharp(adjective, understanding, cool, bright, lively)
11
awake(adjective, understanding, cool, reasonable, keen)
6
conscious(adjective, understanding, cool, keen, sensible)
6
prepared(adjective, excited, ready, anxious, alert)
5
judicious(adjective, understanding, cool, reasonable, sensible)
4
alive(adjective, cool, alert, significant, intelligent)
4
wise(adjective, understanding, cool, reasonable, sharp)
3
discerning(adjective, understanding, cool, reasonable, keen)
3
intelligent(adjective, cool, reasonable, sharp, bright)
3
perceptive(adjective, understanding, cool, sharp, bright)
3
sagacious(adjective, understanding, cool, reasonable, sensible)
3
sage(adjective, understanding, cool, reasonable, sensible)
3
sensible(adjective, understanding, cool, reasonable, keen)
2
apprehensive(adjective, cool, deliberate, excited, ready)
2
bright(adjective, cool, sharp, lively, alert)
2
canny(adjective, cool, reasonable, sensible, restrained)
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APASmart Define. (2015). vigilant thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/vigilant/thesaurus/synonyms
ChicagoSmart Define. 2015. "vigilant thesaurus" https://smartdefine.org/vigilant/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, vigilant thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/vigilant/thesaurus/synonyms>.
MLASmart Define. "vigilant thesaurus" 10 April 2015. Web. 27 September 2026. <https://smartdefine.org/vigilant/thesaurus/synonyms>