6
zestful(adjective, energetic, lively, vigorous, animated)
6
zippy(adjective, strong, tough, bright, energetic)
5
dynamic(adjective, strong, tough, energetic, powerful)
5
excitable(lively, fiery, courageous, gritty, sensibility)
5
forceful(adjective, strong, tough, intense, energetic)
5
hearty(adjective, strong, tough, intense, energetic)
5
lusty(adjective, strong, tough, intense, energetic)
5
manly(adjective, courage)
5
mettled(adjective, lively, spirited, brave)
5
potent(adjective, strong, tough, energetic, powerful)
5
powerful(adjective, strong, tough, energetic, lively)
5
racy(adjective, energetic, zestful)
5
robust(adjective, strong, tough, intense, energetic)
5
sprightly(adjective, bright, energetic, lively, determined)
5
stalwart
5
strenuous(adjective, strong, tough, intense, energetic)
5
unafraid(adjective, fear)
5
venturesome
4
heroic(adjective, fear, courageous, fearless, plucky)
4
alert(adjective, bright, energetic, passionate, lively)
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APASmart Define. (2016). mettlesome thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/mettlesome/thesaurus/synonyms
ChicagoSmart Define. 2016. "mettlesome thesaurus" https://smartdefine.org/mettlesome/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2016, mettlesome thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/mettlesome/thesaurus/synonyms>.
MLASmart Define. "mettlesome thesaurus" 2 March 2016. Web. 29 September 2026. <https://smartdefine.org/mettlesome/thesaurus/synonyms>