192 entries under hard topic. ×
| ugly(adjective, evil, rough, nasty) | |
| uneven(adjective, severe, sharp, flat) | |
| unmelodious(adjective, severe, sharp, flat) | |
| unrelenting(adjective, tough, severe, sharp) | |
| vile(adjective, bad, evil, rough) | |
| avaricious(adjective, tough, harsh, cruel) | |
| barbarous(adjective, tough, harsh, grim) | |
| bloody(adjective, tough, harsh, cruel) | |
| callous(adjective, tough, evil, rough) | |
| caterwauling(adjective, severe, sharp, flat) | |
| contemptible(adjective, bad, evil, rough) | |
| craggy(adjective, severe, sharp, flat) | |
| creaking(adjective, severe, sharp, flat) | |
| croaking(adjective, severe, sharp, flat) | |
| dangerous(adjective, evil, rough, nasty) | |
| despicable(adjective, bad, evil, rough) | |
| difficult(adjective, tough, evil, rough) | |
| dirty(adjective, bad, rough, nasty) | |
| disagreeing(adjective, severe, sharp, flat) | |
| dishonorable(adjective, evil, rough, nasty) |
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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> |