198 entries under hard topic. ×
| implacable(adjective, tough, sturdy, rigid) | |
| indurated(adjective, set, firm, stiff) | |
| insensible(adjective, tough, sturdy, rigid) | |
| molded(adjective, solid, stiff, sturdy) | |
| mortified(adjective, tough, sturdy, rugged) | |
| packed(adjective, close, set, firm) | |
| plastic(adjective, tough, flexible, hardy) | |
| quick to recover(expression, adjective, idiom, tough) | |
| rebounding(adjective, tough, flexible, hardy) | |
| rock-hard(adjective, compact, dense) | |
| rock hard(expression, adjective, tough) | |
| rolling with punches(expression, adjective, idiom, tough) | |
| snapping back(expression, adjective, tough, flexible) | |
| springy(adjective, tough, flexible, hardy) | |
| stiff-necked(adjective, tough, sturdy, rigid) | |
| stretchy(adjective, tough, flexible, hardy) | |
| tough as nails(expression, adjective, idiom, solid) | |
| unsparing(adjective, tough, severe, sharp) |
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| APA | Smart Define. (2016). strong thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/strong/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "strong thesaurus" https://smartdefine.org/strong/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2016, strong thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/strong/thesaurus/synonyms>. |
| MLA | Smart Define. "strong thesaurus" 1 April 2016. Web. 26 September 2026. <https://smartdefine.org/strong/thesaurus/synonyms> |