320 entries under severe topic. ×
| unadorned(adjective, correct, cold, precise) | |
| uncivil(adjective, tough, sharp, nasty) | |
| unembellished(adjective, cold, austere, unadorned) | |
| ungracious(adjective, mean, tough, sharp) | |
| upsetting(adjective, tough, offensive, tricky) | |
| vengeful(adjective, evil, nasty, harsh) | |
| wild(adjective, rough, difficult, miserable) | |
| Draconian(tough, firm, harsh, rigid) | |
| aggravating(offensive, distressing, upsetting, irritating) | |
| alarming(offensive, distressing, upsetting, disturbing) | |
| asleep(adjective, tough, cruel, unsympathetic) | |
| asperous(adjective, sharp, flat, rough) | |
| benumbed(adjective, tough, firm, solid) | |
| brick wall(expression, adjective, strong, substantial) | |
| by the book(expression, adjective, idiom, strong, tough) | |
| cacophonous(adjective, sharp, flat, rough) | |
| caterwauling(adjective, sharp, flat, rough) | |
| churlish(adjective, tough, rough, nasty) | |
| clashing(adjective, sharp, flat, rough) | |
| cold fish(expression, adjective, mean, tough) |
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| APA | Smart Define. (2016). hard thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/hard/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "hard thesaurus" https://smartdefine.org/hard/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2016, hard thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/hard/thesaurus/synonyms>. |
| MLA | Smart Define. "hard thesaurus" 24 March 2016. Web. 25 September 2026. <https://smartdefine.org/hard/thesaurus/synonyms> |