198 entries under hard topic. ×
| firm(noun, adjective, calm, good, set) | |
| sound(noun, adjective, calm, clear, strong) | |
| stable(adjective, good, strong, sound) | |
| robust(adjective, person, clear, body) | |
| substantial(adjective, calm, good, strong) | |
| heavy(adjective, feature, characteristic, person, body) | |
| unyielding(adjective, set, sound, tough) | |
| sturdy(adjective, calm, person, body, strong) | |
| rigid(adjective, tough, strain, firm) | |
| tough(adjective, calm, person, body) | |
| tight(adjective, close, secure, tough) | |
| rock-solid(adjective, strain, firmness, compact) | |
| solid(adjective, calm, good, person, set) | |
| rugged(adjective, sound, tough, fit) | |
| husky(adjective, person, body, great) | |
| vivid(adjective, characteristic, open, great) | |
| secure(verb, adjective, calm, strong) | |
| hefty(adjective, person, body, tough) | |
| severe(adjective, tough, intense, violent) | |
| profound(adjective, strong, great, sharp) |
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| APA | Smart Define. (2016). strong thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/strong/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "strong thesaurus" https://smartdefine.org/strong/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2016, strong thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/strong/thesaurus/synonyms>. |
| MLA | Smart Define. "strong thesaurus" 1 April 2016. Web. 24 September 2026. <https://smartdefine.org/strong/thesaurus/synonyms> |