- Definitions|2
- Thesaurus|1.4k
- Abbreviations|0
100 entries under hard topic. ×
| thorny(adjective, difficult, complex) | |
| taxing(adjective, difficult, complex, laborious) | |
| tight(adjective, difficult, complex) | |
| elaborate(adjective, difficult, complex, exertion) | |
| intricate(adjective, difficult, complex, awkward) | |
| leaden(adjective, difficult, complex) | |
| profound(adjective, difficult, complex) | |
| weighty(adjective, difficult, complex) | |
| ambitious(adjective, difficult, complex) | |
| grave(adjective, difficult, complex) | |
| grievous(adjective, difficult, complex) | |
| hefty(adjective, difficult, complex) | |
| knotted(adjective, difficult, complex) | |
| ponderous(adjective, difficult, complex) | |
| problematic(adjective, difficult, complex) | |
| serious(adjective, difficult, harsh, cruel) | |
| toilful(adjective, difficult, complex, awkward) | |
| disturbing(adjective, difficult, complex) | |
| involved(adjective, difficult, complex, awkward) | |
| onerous(adjective, great, tough, difficulty) |
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| APA | Smart Define. (2015). toilsome thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/toilsome/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "toilsome thesaurus" https://smartdefine.org/toilsome/thesaurus/synonyms (accessed September 29, 2026). |
| Harvard | Smart Define 2015, toilsome thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/toilsome/thesaurus/synonyms>. |
| MLA | Smart Define. "toilsome thesaurus" 10 April 2015. Web. 29 September 2026. <https://smartdefine.org/toilsome/thesaurus/synonyms> |