188 entries under vigorous topic. ×

4
glowing(adjective, sound, sharp, fit, bright)
4
hale and hearty(expression, adjective, idiom, force, power)
4
in fine fettle(expression, adjective, idiom, sound, tough)
4
kinetic(adjective, moving, energetic, lively, active)
4
safe and sound(expression, adjective, idiom, person, tough)
4
sprightly(adjective, intense, energetic, powerful, lively)
4
unflagging(adjective, sound, tough, fit, firm)
4
untiring(adjective, moving, energetic, lively, determined)
3
afire(adjective, adverb, feature, great, powerful)
3
burning(adjective, great, sharp, difficult, harsh)
3
deep-felt(adjective, enthusiastic, sincere, wholehearted)
3
driving(adjective, moving, tough, severe, energetic)
3
frisky(adjective, power, strength, active)
3
impassioned(adjective, difficult, intense, passionate, violent)
3
industrious(adjective, moving, lively, active)
3
prolific(adjective, feature, great, powerful)
3
punchy(adjective, strength, energetic, violent, powerful)
3
real(adjective, enthusiastic, sincere, effective)
3
true(adjective, good, sound, tough, reasonable)
3
whole(adjective, health, sound, tough, fit)
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APASmart Define. (2016). strong thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/strong/thesaurus/synonyms
ChicagoSmart Define. 2016. "strong thesaurus" https://smartdefine.org/strong/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, strong thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/strong/thesaurus/synonyms>.
MLASmart Define. "strong thesaurus" 1 April 2016. Web. 26 September 2026. <https://smartdefine.org/strong/thesaurus/synonyms>