Synonyms|374Antonyms|68|Broader|6Narrower|0Related|45

48 entries under active topic. ×

2
brisk(adjective, strong, moving, lively)
2
kinetic(adjective, strong, moving, energetic, lively)
2
peppy(adjective, strong, tough, fit, lively)
2
plugging(adjective, strong, firm, determined)
2
sprightly(adjective, strong, moving, lively)
2
zippy(adjective, strong, tough, fit, lively)
1
ball of fire(expression, adjective, idiom, strong, lively)
1
breezy(adjective, strong, moving, lively)
1
demoniac(adjective, strong, moving, lively)
1
eager beaver(expression, adjective, strong, firm, determined)
1
forcible(adjective, strong, moving, lively)
1
full of beans(expression, adjective, idiom, peppy)
1
grind(adjective, strong, firm, energetic, determined)
1
hardy(adjective, strong, tough, fit, lively)
1
high-powered(adjective, strong, moving, lively)
1
lusty(adjective, strong, sound, tough, fit)
1
potent(adjective, strong, tough, fit, lively)
1
powerful(adjective, strong, sound, tough, fit)
1
red-blooded(adjective, strong, moving, lively)
1
robust(strong, fit, healthy, well)
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APASmart Define. (2015). indefatigable thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/indefatigable/thesaurus/synonyms
ChicagoSmart Define. 2015. "indefatigable thesaurus" https://smartdefine.org/indefatigable/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, indefatigable thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/indefatigable/thesaurus/synonyms>.
MLASmart Define. "indefatigable thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/indefatigable/thesaurus/synonyms>