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3
unflagging(adjective, strong, sound, tough, fit)
2
efficient(adjective, energetic, violent, powerful, lively)
2
breezy(adjective, strong, moving, pleasant, energetic)
2
bubbly(adjective, bright, energetic, lively)
2
bustling(adjective, moving, keen, sharp, energetic)
2
coming on strong(expression, adjective, idiom, strong, energetic)
2
contemporary(alive, operative, existing, breathing)
2
current(alive, operative, existing, breathing)
2
ebullient(adjective, keen, warm, energetic, passionate)
2
energizing(adjective, energetic, lively, healthy)
2
full of life(expression, adjective, idiom, strong, tough)
2
functioning(operative, operational)
2
go-go(adjective, bright, energetic, cheerful)
2
in force(expression, operative, operational)
2
operative(alive, existing, breathing, operational)
2
ready(adjective, keen, sharp, bright, energetic)
2
sparkling(adjective, bright, energetic, enthusiastic, excited)
2
vitalized(adjective, energetic, lively, spirited)
1
activating(adjective, energetic, lively, vital)
1
all there(expression, bright, wise, sharp-witted)
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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>