- Definitions|2
- Thesaurus|2.1k
- Abbreviations|0
67 entries under complex topic. ×
| leaden(adjective, hard, difficult) | |
| ponderous(adjective, hard, difficult) | |
| problematic(adjective, hard, tough, difficult) | |
| profound(adjective, hard, difficult) | |
| sophisticated(adjective, hard, difficult, intricate) | |
| sticky(adjective, hard, difficult, awkward) | |
| toilful(adjective, hard, difficult, awkward) | |
| troublesome(adjective, hard, tough, difficulty, difficult) | |
| abstruse(adjective, hard, fancy, difficult) | |
| dense(adjective, difficult, intricate, thorny) | |
| Daedalean(adjective, hard, fancy, difficult) | |
| can of worms(expression, adjective, idiom, hard, fancy) | |
| convoluted(adjective, hard, fancy, difficult) | |
| entangled(adjective, hard, fancy, difficult) | |
| fancy(adjective, hard, difficult, intricate) | |
| gasser(adjective, hard, fancy, difficult) | |
| hi-tech(adjective, hard, fancy, difficult) | |
| interlaced(adjective, hard, fancy, difficult) | |
| mega factor(expression, adjective, hard, fancy, difficult) | |
| mixed(adjective, hard, fancy, difficult) |
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| APA | Smart Define. (2016). arduous thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/arduous/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "arduous thesaurus" https://smartdefine.org/arduous/thesaurus/synonyms (accessed September 20, 2026). |
| Harvard | Smart Define 2016, arduous thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/arduous/thesaurus/synonyms>. |
| MLA | Smart Define. "arduous thesaurus" 26 February 2016. Web. 20 September 2026. <https://smartdefine.org/arduous/thesaurus/synonyms> |