- Definitions|2
- Thesaurus|938
- Abbreviations|0
possible profanity
| vile(adjective, terrible, vicious, wicked, brutal) | |
| dreadful | |
| sinister(adjective, evil) | |
| barbarous(adjective, animal, mean, evil, harsh) | |
| foul | |
| malevolent(adjective, evil, harsh, violent, wild) | |
| monstrous(adjective, shocking, unnatural) | |
| villainous(adjective, evil, violent, wild, fierce) | |
| bloodthirsty(adjective, aroused negative) | |
| abominable | |
| appalling(adjective, terrible, vicious, brutal, disgraceful) | |
| bad(adjective, evil, awful, violent, wild) | |
| barbaric(adjective, animal, mean, awful, violent) | |
| bestial(adjective, animal, mean, harsh, violent) | |
| execrable(adjective, terrible, vicious, wicked, brutal) | |
| ferocious(adjective, animal, mean, harsh, violent) | |
| ghoulish(adjective, kind, hideous, scary) | |
| heinous(adjective, awful, terrible, vicious, wicked) | |
| horrible | |
| horrid |
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Diabolical on
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| APA | Smart Define. (2016). diabolical thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/diabolical/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "diabolical thesaurus" https://smartdefine.org/diabolical/thesaurus/synonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2016, diabolical thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/diabolical/thesaurus/synonyms>. |
| MLA | Smart Define. "diabolical thesaurus" 24 March 2016. Web. 27 September 2026. <https://smartdefine.org/diabolical/thesaurus/synonyms> |