6
indefatigable(adjective, resolute)
6
obsessed(adjective, keen, warm, passionate, enthusiastic)
6
ready(adjective, keen, happy, intense, energetic)
6
solicitous(adjective, kind, keen, friendly, warm)
6
tireless(adjective, resolute)
6
true(adjective, person, kind, keen, total)
6
vivacious(adjective, person, strong, warm, intense)
6
wholehearted(adjective, person, strong, keen, warm)
5
cordial(adjective, feeling, kind, friendly, warm)
5
ablaze(adjective, vigorous, heated)
5
afire(adjective, keen, passionate, enthusiastic, excited)
5
bold(adjective, tough, keen, smart, intense)
5
faithful(adjective, kind, keen, friendly, warm)
5
fierce(adjective, clear, strong, tough, severe)
5
gung ho(expression, adjective, strong, concern, keen)
5
hot-blooded(adjective, moving, keen, warm, intense)
5
inflamed(adjective, intense, passionate, violent, excited)
5
possessed(adjective, keen, passionate, violent, enthusiastic)
5
violent(adjective, clear, strong, tough, severe)
4
agitated(adjective, excited, vigorous, nervous, restless)
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APASmart Define. (2016). zealous thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/zealous/thesaurus/synonyms
ChicagoSmart Define. 2016. "zealous thesaurus" https://smartdefine.org/zealous/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, zealous thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/zealous/thesaurus/synonyms>.
MLASmart Define. "zealous thesaurus" 24 March 2016. Web. 24 September 2026. <https://smartdefine.org/zealous/thesaurus/synonyms>