192 entries under hard topic. ×
| dull(verb, adjective, nasty, spoil) | |
| earsplitting(adjective, severe, sharp, flat) | |
| evil(adjective, rough, nasty, rude) | |
| fierce(adjective, bad, tough, severe) | |
| formidable(adjective, evil, rough, nasty) | |
| glaring(adjective, severe, sharp, flat) | |
| hard-bitten(adjective, tough, harsh, cruel) | |
| hard-hearted(adjective, tough, harsh, cruel) | |
| hard-nosed(adjective, severe, evil, rough) | |
| hardened(adjective, tough, harsh, cruel) | |
| ignoble(adjective, evil, rough, nasty) | |
| impenitent(adjective, tough, harsh, cruel) | |
| implacable(adjective, tough, harsh, grim) | |
| incompatible(adjective, severe, sharp, flat) | |
| inexorable(adjective, tough, harsh, grim) | |
| infamous(adjective, evil, rough, nasty) | |
| inhuman(adjective, tough, harsh, cruel) | |
| inhumane(adjective, tough, harsh, cruel) | |
| insensitive(adjective, tough, harsh, cruel) | |
| intolerant(adjective, tough, harsh, 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> |