108 entries under difficult topic. ×
| no picnic(adjective, rigorous) | |
| problematical(adjective, complex, awkward, demanding) | |
| slavish(adjective, tough, rough, heavy) | |
| stringent(adjective, hard, tough, severe, rough) | |
| uncompromising(adjective, rigorous) | |
| unpleasant(adjective, hard, tough, severe, evil) | |
| unsparing(adjective, strong, hard, tough, severe) | |
| wearing(adjective, tough, rough, heavy) | |
| wearisome(adjective, hard, tough, rough) | |
| wearying(adjective, tough, rough, heavy) | |
| distressing(adjective, tough, severe, rough) | |
| effortful(adjective, hard, tough, rough) | |
| exhausting(adjective, hard, tough, rough) | |
| fatiguing(adjective, tough, rough, heavy) | |
| finicky | |
| herculean(adjective, strong, tough, rough) | |
| irksome(adjective, tough, rough, heavy) | |
| labored(adjective, hard, tough, rough) | |
| merciless(adjective, tough, rough, unpleasant) | |
| terrible(adjective, tough, rough, heavy) |
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| APA | Smart Define. (2015). rugged thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/rugged/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "rugged thesaurus" https://smartdefine.org/rugged/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2015, rugged thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/rugged/thesaurus/synonyms>. |
| MLA | Smart Define. "rugged thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/rugged/thesaurus/synonyms> |