- Definitions|2
- Thesaurus|2.1k
- Abbreviations|0
54 entries under problematical topic. ×
| difficult(adjective, dull, hard, great, tough) | |
| hard(adjective, dull, great, tough, easy) | |
| laborious(adjective, dull, hard, great, tough) | |
| toilsome(adjective, hard, great, tough, difficulty) | |
| burdensome(adjective, dull, hard, tough, severe) | |
| severe(adjective, hard, tough, rough, difficult) | |
| strenuous(adjective, dull, great, tough, severe) | |
| operose(adjective, hard, tough, severe, difficulty) | |
| rough(adjective, hard, great, tough, severe) | |
| backbreaking(adjective, hard, difficult, heavy, complex) | |
| rugged(adjective, hard, severe, rough, difficult) | |
| complicated(adjective, hard, difficult, complex, awkward) | |
| knotty(adjective, hard, severe, rough, difficult) | |
| tricky(adjective, hard, difficult, complex, awkward) | |
| serious(adjective, hard, tough, easy, difficult) | |
| grinding(adjective, hard, difficult, harsh, cruel) | |
| exhausting(adjective, dull, hard, tough, difficult) | |
| onerous(adjective, dull, hard, great, tough) | |
| intricate(adjective, hard, difficult, complex, awkward) | |
| involved(adjective, hard, difficult, complex, awkward) |
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| APA | Smart Define. (2016). arduous thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/arduous/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "arduous thesaurus" https://smartdefine.org/arduous/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2016, arduous thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/arduous/thesaurus/synonyms>. |
| MLA | Smart Define. "arduous thesaurus" 26 February 2016. Web. 21 September 2026. <https://smartdefine.org/arduous/thesaurus/synonyms> |