- Definitions|2
- Thesaurus|2.8k
- Abbreviations|0
95 entries under hard topic. ×
| multiple(adjective, difficult, complex) | |
| precarious(adjective, difficult, complex) | |
| sensitive(adjective, difficult, delicate, complex) | |
| severe(adjective, difficult, complex, awkward) | |
| sinuous(adjective, difficult, complex) | |
| toilsome(adjective, difficult, complex, awkward) | |
| trying(adjective, difficult, complex, thorny) | |
| convoluted(adjective, simple, fancy, obscure) | |
| entangled(verb, adjective, fancy, difficult) | |
| abstruse(adjective, fancy, obscure, difficult) | |
| obscure(adjective, difficult, complex, sophisticated) | |
| perplexing(adjective, fancy, obscure, difficult) | |
| deep(adjective, obscure, complex, full) | |
| puzzling(adjective, fancy, obscure, difficult) | |
| confusing(adjective, complex, tricky, complicated) | |
| recondite(adjective, fancy, obscure, difficult) | |
| baffling(adjective, difficult, complex, awkward) | |
| mixed(adjective, fancy, obscure, difficult) | |
| subtle(adjective, obscure, complex, tricky) | |
| enigmatic(adjective, obscure, sophisticated, tricky) |
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| APA | Smart Define. (2015). involved thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/involved/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "involved thesaurus" https://smartdefine.org/involved/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2015, involved thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/involved/thesaurus/synonyms>. |
| MLA | Smart Define. "involved thesaurus" 14 April 2015. Web. 26 September 2026. <https://smartdefine.org/involved/thesaurus/synonyms> |