367 entries under hard topic. ×
| byzantine(adjective, difficult, complex) | |
| disturbing(adjective, severe, difficult, awful) | |
| grave(adjective, severe, difficult, harsh) | |
| grinding(adjective, difficult, complex) | |
| hard to understand(expression, adjective, idiom, difficult) | |
| hardened(noun, adjective, characteristic, strong) | |
| heavy-handed(adjective, difficult, complex) | |
| knotted(adjective, difficult, complex) | |
| leathery(adjective, feature, characteristic, strong) | |
| perplexed(adjective, difficult, complex) | |
| troubled(adjective, difficult, complex) | |
| unbearable(adjective, difficult, complex) | |
| convict(noun, adjective, difficult, complex) | |
| dire(adjective, difficult, complex) | |
| hard-hitting(adjective, difficult, complex) | |
| resolute(adjective, calm, clear, strong) | |
| sensitive(adjective, difficult, complex) | |
| solid(adjective, calm, person, body, strong) | |
| unbending(adjective, mean, clear, strong) | |
| onerous(adjective, dull, great, severe) |
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| APA | Smart Define. (2016). tough thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/tough/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "tough thesaurus" https://smartdefine.org/tough/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2016, tough thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/tough/thesaurus/synonyms>. |
| MLA | Smart Define. "tough thesaurus" 30 March 2016. Web. 28 September 2026. <https://smartdefine.org/tough/thesaurus/synonyms> |