70 entries under intelligent topic. ×

39
vigilant(adjective, feature, characteristic, understanding, cool)
36
observant(adjective, feature, characteristic, understanding, cool)
15
aware(adjective, feature, characteristic, understanding, cool)
13
awake(adjective, understanding, cool, reasonable, keen)
8
canny(adjective, close, mean, cool, smart)
8
sharp(adjective, understanding, cool, keen, bright)
7
conscious(adjective, understanding, cool, keen, sensible)
7
sharp-eyed(adjective, alert, attentive, vigilant)
6
alive(adjective, cool, alert, significant, animate)
6
eagle-eyed(adjective, alert, attentive, sharp-eyed)
6
judicious(adjective, understanding, cool, reasonable, smart)
4
apprehensive(adjective, upset, cool, excited, ready)
4
discerning(adjective, understanding, cool, reasonable, keen)
4
perceptive(adjective, understanding, cool, sharp, bright)
3
interested(adjective, alert, considerate, responsive)
3
quick(adjective, understanding, cool, sharp, smart)
3
sagacious(adjective, understanding, cool, reasonable, smart)
3
sensible(adjective, understanding, cool, reasonable, keen)
2
wise(adjective, understanding, cool, reasonable, sharp)
2
advertent(alert, attentive, observant, sharp-eyed)
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APASmart Define. (2016). watchful thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/watchful/thesaurus/synonyms
ChicagoSmart Define. 2016. "watchful thesaurus" https://smartdefine.org/watchful/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, watchful thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/watchful/thesaurus/synonyms>.
MLASmart Define. "watchful thesaurus" 26 February 2016. Web. 27 September 2026. <https://smartdefine.org/watchful/thesaurus/synonyms>