adj.
Pronunciation: ' f ē n-dish
Function: adjective
Date: 1529
1 : perversely diabolical <took a fiendish pleasure in hurting people>
2 : extremely cruel or wicked
3 : excessively bad, unpleasant, or difficult < fiendish weather>
– fiend · ish · ly adverb
– fiend · ish · ness noun