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exuberant(adjective, keen, warm, energetic, passionate)
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fervent(adjective, keen, warm, intense, energetic)
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keen(adjective, good, clear, pleasant, bright)
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passionate(adjective, keen, warm, intense, energetic)
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alert(adjective, good, clear, moving, pleasant)
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effective(adjective, strong, bright, energetic, violent)
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enterprising(adjective, action, strong, tough, keen)
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indefatigable(adjective, strong, sound, tough, fit)
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industrious(adjective, strong, moving, keen, energetic)
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resolute(adjective, strong, keen, solid, energetic)
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snappy(adjective, action, strong, moving, tough)
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tireless(adjective, strong, energetic, lively, determined)
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flourishing(adjective, strong, great, sound, tough)
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aggressive(adjective, strong, keen, energetic, violent)
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bold(adjective, tough, keen, smart, energetic)
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determined(adjective, strong, keen, solid, energetic)
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excited(adjective, keen, warm, energetic, passionate)
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full of pep(expression, adjective, idiom, moving, bright)
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red-blooded(adjective, strong, energetic, powerful, lively)
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smart(adjective, tough, keen, sharp, bright)
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APASmart Define. (2016). vigorous thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/vigorous/thesaurus/synonyms
ChicagoSmart Define. 2016. "vigorous thesaurus" https://smartdefine.org/vigorous/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, vigorous thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/vigorous/thesaurus/synonyms>.
MLASmart Define. "vigorous thesaurus" 1 April 2016. Web. 23 September 2026. <https://smartdefine.org/vigorous/thesaurus/synonyms>