26
astute(adjective, understanding, smooth, sharp, smart)
25
splendid(adjective, good, cool, great, excellent)
23
alert(adjective, good, clear, understanding, strong)
23
fabulous(adjective, good, great, pleasant, excellent)
22
bitter(adjective, strong, cool, severe, sharp)
22
great(adjective, good, strong, cool, excellent)
22
neat(adjective, good, cool, great, pleasant)
22
quality(adjective, job, beautiful, very best kind, awesome)
21
bright(adjective, good, clear, sharp, ability)
20
piercing(adjective, feeling, strong, cool, severe)
20
marvelous(adjective, good, cool, great, excellent)
20
perspicacious(adjective, understanding, sharp, smart, bright)
20
severe(adjective, clear, strong, cool, tough)
19
discriminating(adjective, sharp, obscure, smart, sensible)
19
fervent(adjective, clear, strong, tough, desire)
18
swell(adjective, good, cool, great, pleasant)
18
caustic(adjective, feeling, strong, severe, sharp)
18
desirous(adjective, intense, passionate, enthusiastic, excited)
18
trenchant(adjective, feeling, strong, sharp, intense)
17
anxious(adjective, strong, kind, warm, intense)
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APASmart Define. (2016). keen thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/keen/thesaurus/synonyms
ChicagoSmart Define. 2016. "keen thesaurus" https://smartdefine.org/keen/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, keen thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/keen/thesaurus/synonyms>.
MLASmart Define. "keen thesaurus" 29 March 2016. Web. 24 September 2026. <https://smartdefine.org/keen/thesaurus/synonyms>