| severe(adjective, mean, harsh, violent, cruel) | |
| subhuman | |
| sullen(adjective, sorrow, depress, sadness, emotion) | |
| terrible(adjective, strong, violent, brutal, ferocious) | |
| unfeeling(adjective, mean, rough, harsh, cruel) | |
| unforgiving(adjective, mean, harsh, cruel, vicious) | |
| unmerciful(adjective, mean, harsh, violent, cruel) | |
| virulent | |
| dangerous(adjective, strong, violent, brutal, ferocious) | |
| abandoned | |
| abominable(adverb, low, base, coarse, vile) | |
| adamant(adjective, mean, harsh, cruel, vicious) | |
| amok | |
| anthropophagous | |
| baleful(adjective, sorrow, depress, sadness, emotion) | |
| base(adjective, adverb, low, physical, coarse) | |
| beetle-browed(adjective, sorrow, depress, sadness, emotion) | |
| belligerent | |
| bellowing | |
| berserk |
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| APA | Smart Define. (2015). feral thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/feral/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "feral thesaurus" https://smartdefine.org/feral/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2015, feral thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/feral/thesaurus/synonyms>. |
| MLA | Smart Define. "feral thesaurus" 17 July 2015. Web. 26 September 2026. <https://smartdefine.org/feral/thesaurus/synonyms> |