56 entries under complex topic. ×
| arduous(adjective, hard, tough, difficult) | |
| burdensome(adjective, hard, difficult) | |
| disturbing(adjective, hard, difficult) | |
| elaborate(adjective, hard, difficult, intricate) | |
| impossible(adjective, hard, difficult) | |
| knotted(adjective, hard, difficult) | |
| laborious(adjective, hard, difficult) | |
| nasty(adjective, hard, difficult) | |
| operose(adjective, hard, difficult) | |
| profound(adjective, hard, difficult) | |
| sophisticated(adjective, hard, difficult, intricate) | |
| toilsome(adjective, hard, difficult) | |
| far out(adjective, hard, difficult) | |
| perplexed(adjective, hard, difficult) | |
| severe(adjective, hard, difficult) | |
| troubled(adjective, hard, difficult) | |
| problematical(adjective, clear, open, difficult, certain) | |
| puzzling(adjective, hard, open, fancy, rough) | |
| perplexing(adjective, hard, tough, fancy, rough) | |
| troublesome(adjective, hard, tough, fancy, severe) |
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| APA | Smart Define. (2016). problematic thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/problematic/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "problematic thesaurus" https://smartdefine.org/problematic/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2016, problematic thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/problematic/thesaurus/synonyms>. |
| MLA | Smart Define. "problematic thesaurus" 24 March 2016. Web. 22 September 2026. <https://smartdefine.org/problematic/thesaurus/synonyms> |