fiendishly

ADVERB /findɪʃli/
10 LETTERS · 3 SYLLABLES · STARTS WITH F

fiendishly is a valid 10-letter word worth 20 points in Scrabble and 20 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
F4I1E1N1D2I1S1H4L1Y4
4 + 1 + 1 + 1 + 2 + 1 + 1 + 4 + 1 + 4 =20 PTS
DOUBLE WORD → 40TRIPLE WORD → 60
MEANING

What does fiendishly mean?

ADVERB · 1 SENSE
1

As a devil; in an evil manner.