155 entries under difficult topic. ×
| dire(adjective, hard, complex, painful) | |
| weighty(adjective, hard, tough, honest) | |
| acute(adjective, strong, great, severe, sharp) | |
| rigorous(adjective, strong, hard, tough, correct) | |
| nasty(adjective, bad, hard, tough) | |
| rugged(adjective, strong, hard, tough, rough) | |
| extreme(adjective, strong, hard, great, tough) | |
| punishing(adjective, hard, harsh, complex) | |
| unbearable(adjective, hard, complex, painful) | |
| laborious(adjective, hard, tough, rough) | |
| taxing(adjective, hard, tough, harsh) | |
| toilsome(adjective, hard, tough, harsh) | |
| inflexible(adjective, strong, hard, tough, rough) | |
| grinding(adjective, hard, harsh, pain) | |
| tight(adjective, hard, complex, rigid) | |
| knotty(adjective, hard, violent, complex) | |
| stubborn(adjective, appearance, strong, hard, tough) | |
| thorny(adjective, hard, complex, problematic) | |
| trying(adjective, hard, heavy, complex) | |
| uncompromising(adjective, clear, hard, tough, rough) |
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| APA | Smart Define. (2016). severe thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/severe/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "severe thesaurus" https://smartdefine.org/severe/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2016, severe thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/severe/thesaurus/synonyms>. |
| MLA | Smart Define. "severe thesaurus" 24 March 2016. Web. 22 September 2026. <https://smartdefine.org/severe/thesaurus/synonyms> |