86 entries under harsh topic. ×
| amaroidal(adjective, sharp, pungent, acid) | |
| blunt(adjective, tough, awkward, grumpy) | |
| unrelenting(adjective, hard, tough, severe, sharp) | |
| avaricious(adjective, hard, tough, cruel) | |
| awkward(tough, irritable, grumpy, bad-tempered) | |
| barbarous(adjective, hard, tough, grim) | |
| bloody(adjective, hard, tough, cruel) | |
| callous(adjective, hard, tough, evil, rough) | |
| captious(adjective, tough, difficult, awkward) | |
| difficult(adjective, hard, tough, evil, rough) | |
| fierce(adjective, bad, hard, tough, severe) | |
| hard-bitten(adjective, hard, tough, cruel) | |
| hard-hearted(adjective, hard, tough, cruel) | |
| hardened(adjective, hard, tough, cruel) | |
| impenitent(adjective, hard, tough, cruel) | |
| implacable(adjective, hard, tough, grim) | |
| inexorable(adjective, hard, tough, grim) | |
| inhuman(adjective, hard, tough, cruel) | |
| inhumane(adjective, hard, tough, cruel) | |
| insensitive(adjective, hard, tough, cruel) |
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| APA | Smart Define. (2016). sour thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/sour/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "sour thesaurus" https://smartdefine.org/sour/thesaurus/synonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2016, sour thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/sour/thesaurus/synonyms>. |
| MLA | Smart Define. "sour thesaurus" 24 March 2016. Web. 27 September 2026. <https://smartdefine.org/sour/thesaurus/synonyms> |