- Definitions|2
- Thesaurus|2.1k
- Abbreviations|0
275 entries under adjective topic. ×
| elaborate(hard, difficult, complex, grand) | |
| involved(hard, difficult, complex, awkward) | |
| knotted(hard, difficult, complex) | |
| labyrinthine(hard, difficult, complex, intricate) | |
| leaden(hard, difficult, complex) | |
| ponderous(hard, difficult, complex) | |
| problematic(hard, tough, difficult, complex) | |
| profound(hard, difficult, complex) | |
| sophisticated(hard, difficult, complex, intricate) | |
| sticky(hard, difficult, complex, awkward) | |
| toilful(hard, difficult, complex, awkward) | |
| fatiguing(dull, difficult, awkward, boring) | |
| grueling(hard, tough, severe, difficult) | |
| troublesome(hard, tough, difficulty, difficult) | |
| uphill(hard, great, tough, easy) | |
| demanding(dull, hard, tough, severe) | |
| gruelling | |
| tiring(dull, tough, difficult, awkward) | |
| formidable(tough, severe, difficulty, rough) | |
| heavy(dull, tough, severe, rough) |
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| APA | Smart Define. (2016). arduous thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/arduous/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "arduous thesaurus" https://smartdefine.org/arduous/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2016, arduous thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/arduous/thesaurus/synonyms>. |
| MLA | Smart Define. "arduous thesaurus" 26 February 2016. Web. 24 September 2026. <https://smartdefine.org/arduous/thesaurus/synonyms> |