197 entries under hard topic. ×
| prepared(adjective, wise, unfeeling, unsympathetic) | |
| refractory(adjective, tough, firm, solid) | |
| rheumatic(adjective, firm, solid, stiff) | |
| rigorous(adjective, tough, harsh, cruel) | |
| savage(adjective, tough, harsh, cold) | |
| sensationless(adjective, tough, severe, cruel) | |
| senseless(adjective, tough, severe, cruel) | |
| soulless(adjective, careless, indifferent, cruel) | |
| sour(adjective, tough, harsh, cruel) | |
| spiritless(adjective, cool, careless, indifferent) | |
| starched(verb, adjective, firm, solid) | |
| starchy(adjective, firm, solid, stiff) | |
| stark(adjective, firm, solid, stiff) | |
| stiff as a board(expression, adjective, idiom, firm) | |
| strong(adjective, set, sound, tough) | |
| sturdy(strong, tough, fit, solid) | |
| substantial(strong, fit, solid, healthy) | |
| surly(adjective, tough, severe, cruel) | |
| tactless(adjective, indifferent, unsympathetic, unkind) | |
| tense(adjective, firm, solid, stiff) |
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| APA | Smart Define. (2016). hardened thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/hardened/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "hardened thesaurus" https://smartdefine.org/hardened/thesaurus/synonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2016, hardened thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/hardened/thesaurus/synonyms>. |
| MLA | Smart Define. "hardened thesaurus" 29 March 2016. Web. 27 September 2026. <https://smartdefine.org/hardened/thesaurus/synonyms> |