242 entries under tough topic. ×

11
stubborn(adjective, hard, firm, violent)
11
well(adjective, person, sound, right)
10
fit(adjective, sound, strength, right)
10
capable(adjective, good, great, sound)
10
zealous(adjective, difficult, intense, energetic)
9
brave(adjective, determined, noble, bold)
9
efficient(adjective, good, sound, right)
9
full-bodied(adjective, power, healthy, rich)
9
harsh(adjective, hard, great, severe)
9
virile(adjective, fit, fine, energetic)
8
brisk(adjective, severe, energetic, powerful)
8
dynamic(adjective, great, bright, intense)
8
spirited(adjective, open, bright, difficult)
7
fixed(adjective, hard, sound, secure)
7
concentrated(adjective, set, hard, firm)
7
flourishing(adjective, sound, right, fit)
7
gutsy(adjective, energetic, violent, powerful)
7
mettlesome(adjective, energetic, powerful, lively)
7
peppy(adjective, energetic, powerful, lively)
7
strenuous(adjective, moving, difficult, energetic)
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APASmart Define. (2016). strong thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/strong/thesaurus/synonyms
ChicagoSmart Define. 2016. "strong thesaurus" https://smartdefine.org/strong/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, strong thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/strong/thesaurus/synonyms>.
MLASmart Define. "strong thesaurus" 1 April 2016. Web. 28 September 2026. <https://smartdefine.org/strong/thesaurus/synonyms>