- Definitions|2
- Thesaurus|383
- Abbreviations|0
45 entries under hard topic. ×
| laborious(adjective, work, tough, severe) | |
| arduous(adjective, tough, severe, rough) | |
| backbreaking(adjective, difficult, complex, awkward) | |
| difficult(adjective, tough, severe, rough) | |
| toilsome(adjective, tough, difficult, complex) | |
| punishing(adjective, difficult, complex) | |
| severe(adjective, tough, difficult, violent) | |
| tough(adjective, severe, rough, difficult) | |
| burdensome(adjective, tough, difficult, complex) | |
| painful(adjective, difficult, complex) | |
| ambitious(adjective, work, difficult, complex) | |
| rugged(adjective, severe, difficult, violent) | |
| serious(adjective, difficult, important, complex) | |
| sticky(adjective, difficult, complex, awkward) | |
| intricate(adjective, difficult, complex, awkward) | |
| knotty(adjective, severe, rough, difficult) | |
| rough(adjective, difficult, complex, awkward) | |
| thorny(adjective, difficult, complex) | |
| tricky(adjective, difficult, complex, awkward) | |
| complex(adjective, difficult) |
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| APA | Smart Define. (2015). operose thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/operose/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "operose thesaurus" https://smartdefine.org/operose/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2015, operose thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/operose/thesaurus/synonyms>. |
| MLA | Smart Define. "operose thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/operose/thesaurus/synonyms> |