197 entries under hard topic. ×
| crass(adjective, indifferent, unkind, unresponsive) | |
| disdainful(adjective, unfeeling, unsympathetic, toughened) | |
| durable(adjective, strong, firm, solid) | |
| fierce(adjective, tough, harsh, cruel) | |
| fine-grained(tough, solid, rigid, inflexible) | |
| heavy(tough, solid, rigid, inflexible) | |
| impassible(insensitive, unsusceptible) | |
| impermeable(solid, rigid) | |
| inaccessible(adjective, unfeeling, unsympathetic, toughened) | |
| iron(adjective, set, strong, firm) | |
| murderous(adjective, tough, harsh, cruel) | |
| nonporous(tough, solid, rigid, inflexible) | |
| packed(adjective, set, strong, firm) | |
| rocky(adjective, set, strong, firm) | |
| sanguinary(adjective, tough, harsh, cruel) | |
| tyrannical(adjective, tough, harsh, cruel) | |
| unbreakable(adjective, strong, firm, solid) |
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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> |