108 entries under difficult topic. ×
| sensitive(adjective, hard, delicate, uncertain) | |
| serious(adjective, strong, hard, tough) | |
| stubborn(adjective, strong, hard, tough, difficulty) | |
| toilful(adjective, hard, complex, awkward) | |
| dire(adjective, hard, unpleasant, complex) | |
| painful(adjective, hard, tough, harsh) | |
| punishing(adjective, hard, complex) | |
| scabrous(adjective, smooth, rough, harsh) | |
| stern(adjective, hard, tough, severe, rough) | |
| demanding(adjective, hard, tough, severe, rough) | |
| strenuous(adjective, action, strong, tough, severe) | |
| bitter(adjective, strong, hard, tough, severe) | |
| brutal(adjective, hard, tough, severe, rough) | |
| formidable(adjective, hard, severe, evil, rough) | |
| heavy(adjective, calm, strong, hard, sound) | |
| rigorous(adjective, strong, hard, tough, severe) | |
| uphill(adjective, hard, severe, rough) | |
| exacting(adjective, hard, tough, severe, rough) | |
| hairy(adjective, severe, harsh, delicate) | |
| inclement(adjective, hard, tough, severe, rough) |
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| APA | Smart Define. (2015). rugged thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/rugged/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "rugged thesaurus" https://smartdefine.org/rugged/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2015, rugged thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/rugged/thesaurus/synonyms>. |
| MLA | Smart Define. "rugged thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/rugged/thesaurus/synonyms> |