353 entries under adjective topic. ×

5
unsleeping(keen, alert, careful, disturbed)
4
absorbed(set, attention, deep, fixed)
4
all ears(expression, sharp, bright, lively)
4
apprehensive(upset, cool, excited, ready)
4
assiduous(considerate, cautious, responsive, helpful)
4
conscientious(alert, careful, caring, thoughtful)
4
diplomatic(cautious, tactful, circumspect)
4
discerning(understanding, cool, reasonable, keen)
4
hawk-eyed
4
insomniac(careful, restless, disturbed, awake)
4
on the job(expression, idiom, keen, sharp)
4
perceptive(understanding, cool, sharp, bright)
4
prompt(responsive, early)
4
rapt(set, attention, deep, fixed)
3
cagey(sharp, smart, bright, sensible)
3
concentrating(set, determined, deep, caring)
3
engrossed(set, determined, deep, fixed)
3
exacting(cautious, wary, vigilant)
3
fastidious(cautious, suspicious, wary, vigilant)
3
finical
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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>