164 entries under difficult topic. ×
| stern(adjective, hard, easy, severe, rough) | |
| stodgy(adjective, hard, complex) | |
| nasty(adjective, mean, bad, hard, cool) | |
| ambitious(adjective, hard, complex) | |
| involved(adjective, hard, complex) | |
| massive(adjective, person, body, hard) | |
| byzantine(adjective, hard, complex) | |
| disturbing(adjective, hard, severe, awful) | |
| grave(adjective, hard, severe, harsh) | |
| grinding(adjective, hard, complex) | |
| hard to understand(expression, adjective, idiom, hard) | |
| heavy-handed(adjective, hard, complex) | |
| knotted(adjective, hard, complex) | |
| perplexed(adjective, hard, complex) | |
| powerful(adjective, person, body, strong, great) | |
| troubled(adjective, hard, complex) | |
| unbearable(adjective, hard, complex) | |
| convict(noun, adjective, hard, complex) | |
| dire(adjective, hard, complex) | |
| hard-hitting(adjective, hard, complex) |
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| APA | Smart Define. (2016). tough thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/tough/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "tough thesaurus" https://smartdefine.org/tough/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2016, tough thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/tough/thesaurus/synonyms>. |
| MLA | Smart Define. "tough thesaurus" 30 March 2016. Web. 24 September 2026. <https://smartdefine.org/tough/thesaurus/synonyms> |