- Definitions|2
- Thesaurus|383
- Abbreviations|0
62 entries under severe topic. ×
| laborious(adjective, work, hard, tough) | |
| hard(adjective, tough, rough, difficult) | |
| arduous(adjective, hard, tough, rough) | |
| difficult(adjective, hard, tough, rough) | |
| tough(adjective, hard, rough, difficult) | |
| rugged(adjective, hard, difficult, violent) | |
| knotty(adjective, hard, rough, difficult) | |
| grave(adjective, hard, tough, difficult) | |
| heavy(adjective, tough, rough, difficult) | |
| strenuous(adjective, hard, tough, rough) | |
| formidable(adjective, tough, rough, difficult) | |
| onerous(adjective, tough, difficult, awkward) | |
| troublesome(adjective, tough, difficult, awkward) | |
| wearisome(adjective, tough, difficult, awkward) | |
| effortful(adjective, tough, difficult, awkward) | |
| uphill(adjective, tough, rough, difficult) | |
| demanding(adjective, tough, rough, difficult) | |
| difficile(adjective, tough, rough, difficult) | |
| exacting(adjective, tough, rough, difficult) | |
| hairy(adjective, tough, rough, difficult) |
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| APA | Smart Define. (2015). operose thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/operose/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "operose thesaurus" https://smartdefine.org/operose/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2015, operose thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/operose/thesaurus/synonyms>. |
| MLA | Smart Define. "operose thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/operose/thesaurus/synonyms> |