Synonyms|477Antonyms|26|Broader|4Narrower|0Related|17

59 entries under keen topic. ×

12
alert(adjective, adverb, sharp, smart)
9
sharp(adjective, adverb, smooth, smart)
8
attentive(adjective, adverb, sharp, bright)
8
observant(adjective, sharp, bright, lively)
7
shrewd(adjective, good, smooth, sharp)
7
watchful(adjective, sharp, bright, lively)
7
wide-awake(adjective, adverb, sharp, bright)
6
perceptive(adjective, smooth, sharp, smart)
6
smart(adjective, smooth, sharp, bright)
5
careful(adjective, sharp, bright, lively)
5
clever(adjective, good, smooth, sharp)
5
intelligent(adjective, good, smooth, sharp)
5
on the job(expression, adjective, idiom, adverb)
4
aware(adjective, careful, considerate, attentive)
4
experienced(adjective, good, smooth, sharp)
4
ingenious(adjective, smooth, sharp, smart)
4
open-eyed(adjective, sharp, alert, careful)
4
wise(adjective, smooth, sharp, smart)
3
agog(alert, careful, attentive, watchful)
3
astute(adjective, smooth, sharp, smart)
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APASmart Define. (2015). on the ball thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/on_the_ball/thesaurus/synonyms
ChicagoSmart Define. 2015. "on the ball thesaurus" https://smartdefine.org/on_the_ball/thesaurus/synonyms (accessed October 1, 2026).
HarvardSmart Define 2015, on the ball thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/on_the_ball/thesaurus/synonyms>.
MLASmart Define. "on the ball thesaurus" 14 April 2015. Web. 1 October 2026. <https://smartdefine.org/on_the_ball/thesaurus/synonyms>