179 entries under strong topic. ×
| obdurate(adjective, mean, cool, tough) | |
| hard-nosed(adjective, mean, tough, severe) | |
| serious(adjective, tough, easy, severe) | |
| hefty(adjective, person, dull, body) | |
| adamantine(adjective, characteristic, strength, tough) | |
| austere(adjective, tough, severe, rough) | |
| grim(adjective, person, mean, tough) | |
| strict(adjective, tough, easy, severe) | |
| flinty(adjective, tough, severe, evil) | |
| rigorous(adjective, tough, severe, rough) | |
| unbending(adjective, mean, tough, severe) | |
| unrelenting(adjective, mean, tough, severe) | |
| heavy(adjective, person, dull, body) | |
| inexorable(adjective, mean, tough, severe) | |
| relentless(adjective, mean, tough, severe) | |
| steely(adjective, tough, firm, solid) | |
| compact(adjective, characteristic, set, tough) | |
| sharp(adjective, tough, severe, harsh) | |
| sturdy(adjective, person, set, body) | |
| unsparing(adjective, mean, tough, severe) |
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| APA | Smart Define. (2016). hard thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/hard/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "hard thesaurus" https://smartdefine.org/hard/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2016, hard thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/hard/thesaurus/synonyms>. |
| MLA | Smart Define. "hard thesaurus" 24 March 2016. Web. 24 September 2026. <https://smartdefine.org/hard/thesaurus/synonyms> |