- Definitions|1
- Thesaurus|138
- Abbreviations|0
| immorality | |
| iniquity | |
| monstrosity(noun, evil, outrage, horror, unpleasantness) | |
| sin | |
| sinfulness(noun, evil) | |
| terribleness(noun, evil, unpleasantness, awfulness, dreadfulness) | |
| atrociousness(outrage, wickedness, horror, barbarity, unpleasantness) | |
| bane(noun, evil) | |
| bestiality | |
| brutality | |
| calamitousness(noun, evil) | |
| corruption | |
| crime(noun, wrong, horror, unpleasantness, transgression) | |
| damnation(noun, evil) | |
| degeneracy | |
| detriment(noun, evil) | |
| filth | |
| grossness(outrage, horror, unpleasantness, awfulness, dreadfulness) | |
| hideousness(noun, evil) | |
| littleness |
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| APA | Smart Define. (2015). nefariousness thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/nefariousness/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "nefariousness thesaurus" https://smartdefine.org/nefariousness/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2015, nefariousness thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/nefariousness/thesaurus/synonyms>. |
| MLA | Smart Define. "nefariousness thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/nefariousness/thesaurus/synonyms> |