- Definitions|2
- Thesaurus|2.1k
- Abbreviations|0
92 entries under hard topic. ×
| difficult(adjective, dull, great, tough) | |
| laborious(adjective, dull, great, tough) | |
| tough(adjective, dull, great, easy) | |
| toilsome(adjective, great, tough, difficulty) | |
| burdensome(adjective, dull, tough, severe) | |
| severe(adjective, tough, rough, difficult) | |
| painful(adjective, difficult, complex, painful) | |
| operose(adjective, tough, severe, difficulty) | |
| rough(adjective, great, tough, severe) | |
| backbreaking(adjective, difficult, heavy, complex) | |
| trying(adjective, dull, tough, severe) | |
| rugged(adjective, severe, rough, difficult) | |
| complex(adjective, difficult, tedious, demanding) | |
| grievous(adjective, difficult, complex, painful) | |
| oppressive(adjective, dull, tough, severe) | |
| punishing(adjective, difficult, complex) | |
| sore(adjective, difficult, complex, painful) | |
| taxing(adjective, tough, severe, rough) | |
| tight(adjective, difficult, complex, troublesome) | |
| complicated(adjective, difficult, complex, awkward) |
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| APA | Smart Define. (2016). arduous thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/arduous/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "arduous thesaurus" https://smartdefine.org/arduous/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2016, arduous thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/arduous/thesaurus/synonyms>. |
| MLA | Smart Define. "arduous thesaurus" 26 February 2016. Web. 22 September 2026. <https://smartdefine.org/arduous/thesaurus/synonyms> |