See Also: fiendish(dictionary)
fiendish(dictionary)

fiendish (iou)



fiendish adjective & adverb. E16.
[from FIEND + -ISH1.]
A. adjective. Resembling or characteristic of a fiend; superhumanly cruel and malignant; colloq. notably unpleasant, intractable, exasperating, etc. E16.
b. adverb. Excessively, horribly. rare. M19.
fiendishly adverb in a fiendish manner; excessively, horribly L19.
fiendishness noun E17.