328 entries under strong topic. ×
| inexorable(adjective, mean, hard, firm) | |
| plucky(adjective, determined, noble, bold) | |
| set(verb, adjective, calm, hard) | |
| unwavering(adjective, calm, secure, firm) | |
| authoritarian(noun, adjective, hard, severe) | |
| constant(adjective, calm, secure, firm) | |
| enduring(adjective, calm, sound, fit) | |
| fearless(adjective, bad, cool, determined) | |
| fit(adjective, fresh, healthy, well) | |
| grim(adjective, hard, severe, firm) | |
| hale(adjective, sound, fit, firm) | |
| implacable(adjective, mean, hard, firm) | |
| inured(noun, adjective, hard, sound) | |
| lusty(adjective, fit, firm, solid) | |
| mettlesome(adjective, intense, energetic, powerful) | |
| virile(adjective, fit, fresh, well) | |
| vital(adjective, intense, energetic, important) | |
| wiry(adjective, thin, narrow, slim) | |
| able-bodied(adjective, person, body, fresh) | |
| beefy(adjective, person, body, brawny) |
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| APA | Smart Define. (2016). tough thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/tough/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "tough thesaurus" https://smartdefine.org/tough/thesaurus/synonyms (accessed September 29, 2026). |
| Harvard | Smart Define 2016, tough thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/tough/thesaurus/synonyms>. |
| MLA | Smart Define. "tough thesaurus" 30 March 2016. Web. 29 September 2026. <https://smartdefine.org/tough/thesaurus/synonyms> |