'Fiendish' definitions:
Definition of 'fiendish'
From: WordNet
adjective
Extremely evil or cruel; expressive of cruelty or befitting hell; "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" [syn: demonic, diabolic, diabolical, fiendish, hellish, infernal, satanic, unholy]
Definition of 'Fiendish'
From: GCIDE
- Fiendish \Fiend"ish\, a. Like a fiend; diabolically wicked or cruel; infernal; malignant; devilish; hellish. -- {Fiend"ish*ly}, adv. -- {Fiend"ish*ness}, n. [1913 Webster]
Synonyms of 'fiendish'
From: Moby Thesaurus
- animal,
- anthropophagous,
- atrocious,
- bad,
- baleful,
- barbaric,
- barbarous,
- beastly,
- bestial,
- bloodthirsty,
- bloody,
- bloody-minded,
- brutal,
- brutalized,
- brute,
- brutish,
- cannibalistic,
- cruel,
- cruel-hearted,
- cursed,
- damnable,
- demoniac,
- demoniacal,
- demonic,
- demonish,
- demonlike,
- devil-like,
- devilish,
- diabolic,
- diabolical,
- Draconian,
- evil,
- execrable,
- fell,
- feral,
- ferocious,
- fiendlike,
- fierce,
- ghoulish,
- heinous,
- hellborn,
- hellish,
- infernal,
- inhuman,
- inhumane,
- malefic,
- maleficent,
- malevolent,
- malicious,
- malign,
- malignant,
- Mephistophelian,
- monstrous,
- murderous,
- ogreish,
- outrageous,
- ruthless,
- sadistic,
- sanguinary,
- sanguineous,
- satanic,
- savage,
- serpentine,
- sharkish,
- sinister,
- slavering,
- subhuman,
- Tartarean,
- truculent,
- unchristian,
- uncivilized,
- ungodly,
- unhallowed,
- unhuman,
- vicious,
- wicked,
- wolfish