fiend|ish «FEEN dihsh», adjective.
very cruel or wicked; devilish; characteristic of a fiend: »
fiendish tortures, a fiendish yell. The savages took fiendish delight in torturing their prisoners.
SYNONYM(S): diabolical, demoniacal.–fiend´ish|ly, adverb.
–fiend´ish|ness, noun.
Useful english dictionary. 2012.