242 entries under tough topic. ×
| stubborn(adjective, hard, firm, violent) | |
| well(adjective, person, sound, right) | |
| fit(adjective, sound, strength, right) | |
| capable(adjective, good, great, sound) | |
| zealous(adjective, difficult, intense, energetic) | |
| brave(adjective, determined, noble, bold) | |
| efficient(adjective, good, sound, right) | |
| full-bodied(adjective, power, healthy, rich) | |
| harsh(adjective, hard, great, severe) | |
| virile(adjective, fit, fine, energetic) | |
| brisk(adjective, severe, energetic, powerful) | |
| dynamic(adjective, great, bright, intense) | |
| spirited(adjective, open, bright, difficult) | |
| fixed(adjective, hard, sound, secure) | |
| concentrated(adjective, set, hard, firm) | |
| flourishing(adjective, sound, right, fit) | |
| gutsy(adjective, energetic, violent, powerful) | |
| mettlesome(adjective, energetic, powerful, lively) | |
| peppy(adjective, energetic, powerful, lively) | |
| strenuous(adjective, moving, difficult, energetic) |
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| APA | Smart Define. (2016). strong thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/strong/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "strong thesaurus" https://smartdefine.org/strong/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2016, strong thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/strong/thesaurus/synonyms>. |
| MLA | Smart Define. "strong thesaurus" 1 April 2016. Web. 28 September 2026. <https://smartdefine.org/strong/thesaurus/synonyms> |