280 entries under tough topic. ×
| pitiless(adjective, mean, severe, nasty) | |
| formidable(adjective, severe, evil, difficulty) | |
| heavy(adjective, person, dull, body, strong) | |
| inexorable(adjective, mean, strong, severe) | |
| unpleasant(adjective, mean, cool, severe) | |
| exhausting(adjective, dull, difficult, awkward) | |
| mean(adjective, person, cool, severe) | |
| relentless(adjective, mean, strong, severe) | |
| steely(adjective, strong, firm, solid) | |
| compact(adjective, characteristic, set, strong) | |
| sharp(adjective, strong, severe, harsh) | |
| sturdy(adjective, person, set, body, strong) | |
| tyrannical(adjective, evil, nasty, harsh) | |
| unforgiving(adjective, mean, severe, rough) | |
| unsparing(adjective, mean, strong, severe) | |
| bitter(adjective, strong, love, severe) | |
| concrete(adjective, clear, strong, solid) | |
| dense(adjective, person, body, strong) | |
| dour(adjective, severe, sharp, nasty) | |
| icy(adjective, person, mean, cool) |
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| APA | Smart Define. (2016). hard thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/hard/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "hard thesaurus" https://smartdefine.org/hard/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2016, hard thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/hard/thesaurus/synonyms>. |
| MLA | Smart Define. "hard thesaurus" 24 March 2016. Web. 28 September 2026. <https://smartdefine.org/hard/thesaurus/synonyms> |