adjective
- Extremely evil or cruel; expressive of cruelty or befitting hell.
- usage: "something demonic in him-something that could be cruel"; "fires lit up a diabolic scene"; "diabolical sorcerers under the influence of devils"; "a fiendish despot"; "hellish torture"; "infernal instruments of war"; "satanic cruelty"; "unholy grimaces"
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). fiendish. Retrieved September 21, 2026, from http://smartdefine.org/fiendish/definitions/1174077 |
| Chicago | WordNet. 2010. "fiendish" http://smartdefine.org/fiendish/definitions/1174077 (accessed September 21, 2026). |
| Harvard | WordNet 2010, fiendish, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/fiendish/definitions/1174077>. |
| MLA | WordNet. "fiendish" 23 October 2010. Web. 21 September 2026. <http://smartdefine.org/fiendish/definitions/1174077> |