| gruff(adjective, sound) | |
| harsh(adjective, mean, rough) | |
| loathsome | |
| mean(verb, adjective, rough, harsh) | |
| nasty(adjective, mean, rough, harsh) | |
| odious | |
| offensive(adjective, mean, rough, harsh) | |
| putrid(adjective, rotten, stinking) | |
| rank(adjective, foul, stinking) | |
| reeking | |
| repugnant | |
| repulsive(adjective, mean, rough, harsh) | |
| sourish | |
| tart(adjective, effect, bitter, sour) | |
| unappealing | |
| unmelodious | |
| unmusical | |
| unsavory(adjective, mean, rough, harsh) | |
| fusty | |
| abhorrent |
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| APA | Smart Define. (2016). sweet thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/sweet/thesaurus/antonyms |
| Chicago | Smart Define. 2016. "sweet thesaurus" https://smartdefine.org/sweet/thesaurus/antonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2016, sweet thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/sweet/thesaurus/antonyms>. |
| MLA | Smart Define. "sweet thesaurus" 1 April 2016. Web. 25 September 2026. <https://smartdefine.org/sweet/thesaurus/antonyms> |