140 entries under hard topic. ×
| unlevel(adjective, severe, sharp, flat) | |
| unmelodious(adjective, severe, sharp, flat) | |
| unmerciful(adjective, mean, tough, severe) | |
| unregenerate(adjective, tough, harsh, cruel) | |
| unremitting(adjective, tough, harsh, persistent) | |
| unrepenting(adjective, tough, harsh, cruel) | |
| dense(adjective, strong, tough, sturdy) | |
| discourteous(adjective, severe, sharp, nasty) | |
| ferric(adjective, strong, tough, sturdy) | |
| ferrous(adjective, strong, tough, sturdy) | |
| hard-bitten(adjective, tough, harsh, cruel) | |
| indomitable(adjective, strong, tough, sturdy) | |
| insensible(adjective, strong, tough, sturdy) | |
| robust(adjective, strong, tough, sturdy) | |
| steel(adjective, strong, tough, sturdy) | |
| strong(adjective, tough, sturdy, rugged) | |
| sturdy(adjective, strong, tough, rugged) | |
| thick(adjective, strong, tough, sturdy) | |
| tough inflexible(expression, strong, tough, sturdy) | |
| uncivil(adjective, severe, sharp, nasty) |
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| APA | Smart Define. (2016). grim thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/grim/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "grim thesaurus" https://smartdefine.org/grim/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2016, grim thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/grim/thesaurus/synonyms>. |
| MLA | Smart Define. "grim thesaurus" 24 March 2016. Web. 24 September 2026. <https://smartdefine.org/grim/thesaurus/synonyms> |