15
vehement(adjective, clear, strong, tough, severe)
14
hot(adjective, strong, keen, warm, difficult)
13
fanatical(adjective, strong, moving, severe, keen)
13
fiery(adjective, feeling, strong, moving, keen)
13
warm(adjective, strong, kind, moving, concern)
11
emotional(adjective, strong, moving, keen, warm)
11
industrious(adjective, strong, keen, intense, energetic)
10
anxious(adjective, strong, kind, keen, friendly)
10
dedicated(adjective, clear, kind, tough, severe)
10
lively(adjective, strong, tough, keen, warm)
10
sincere(adjective, person, feeling, keen, warm)
9
diligent(adjective, strong, keen, intense, energetic)
9
exuberant(adjective, strong, tough, keen, warm)
9
fanatic(noun, adjective, keen, passionate, enthusiastic)
9
glowing(adjective, feeling, strong, keen, warm)
9
great(adjective, strong, powerful, penetrating)
8
assiduous(adjective, active, busy, occupied, industrious)
8
crazy(adjective, love, concern, keen, warm)
8
enterprising(adjective, activity, strong, tough, keen)
8
mad(adjective, love, concern, passionate, enthusiastic)
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APASmart Define. (2016). zealous thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/zealous/thesaurus/synonyms
ChicagoSmart Define. 2016. "zealous thesaurus" https://smartdefine.org/zealous/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, zealous thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/zealous/thesaurus/synonyms>.
MLASmart Define. "zealous thesaurus" 24 March 2016. Web. 23 September 2026. <https://smartdefine.org/zealous/thesaurus/synonyms>