239 entries under severe topic. ×
| dyed-in-the-wool(adjective, strong, hard, harsh) | |
| far-reaching(adjective, difficult, important, significant) | |
| fateful(adjective, difficult, important, significant) | |
| feelingless(adjective, hard, indifferent, cruel) | |
| flat(adjective, dull, boring, unfeeling) | |
| frowning(adjective, strong, hard, harsh) | |
| hard-core(adjective, strong, hard, firm) | |
| hard-shell(adjective, strong, hard, harsh) | |
| inanimate(adjective, hard, cruel, unsympathetic) | |
| intolerable(adjective, hard, rough, difficult) | |
| iron-fisted(adjective, firm, harsh, rigid) | |
| iron-hearted(adjective, hard, cruel, unsympathetic) | |
| meaning business(expression, adjective, strong, firm) | |
| meaningful(adjective, difficult, important, significant) | |
| mortified(adjective, strong, hard, harsh) | |
| no joke(expression, adjective, important, significant) | |
| no laughing matter(expression, adjective, idiom, important) | |
| of consequence(expression, adjective, important, significant) | |
| offensive(adjective, bad, nasty, dark) | |
| out for blood(expression, adjective, idiom, important) |
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| APA | Smart Define. (2016). tough thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/tough/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "tough thesaurus" https://smartdefine.org/tough/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2016, tough thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/tough/thesaurus/synonyms>. |
| MLA | Smart Define. "tough thesaurus" 30 March 2016. Web. 28 September 2026. <https://smartdefine.org/tough/thesaurus/synonyms> |