4
powerful(adjective, strong, tough, intense, energetic)
4
pushy(adjective, clear, tough, severe, keen)
4
red-hot(adjective, feeling, keen, warm, intense)
4
relentless(adjective, difficult, resolute, strenuous, stressful)
4
resolved(adjective, resolute)
4
responsive(adjective, person, kind, moving, keen)
4
sedulous(adjective, strong, keen, energetic, lively)
4
snappy(adjective, strong, tough, energetic, powerful)
4
sprightly(adjective, strong, keen, intense, energetic)
4
staunch(adjective, clear, kind, tough, severe)
4
unreserved(adjective, person, complete, warm, total)
4
unrestrained(adjective, person, warm, energetic, enthusiastic)
4
well-disposed(adjective, keen, happy, agreeable, enthusiastic)
4
workaholic
4
zippy(adjective, strong, tough, energetic, powerful)
3
aggressive(adjective, clear, tough, severe, keen)
3
agog(adjective, strong, keen, warm, intense)
3
agreeable(adjective, kind, keen, happy, tender)
3
amenable(adjective, keen, happy, agreeable, enthusiastic)
3
busy(adjective, strong, keen, intense, energetic)
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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>