Answer:

devilish

Answer	Crossword Clue
DEVILISH	Full of mischief
DEVILISH	Diabolical
DEVILISH	Extremely bad: Colloq.

DEVILISH	Diabolical.
DEVILISH	Mean.
DEVILISH	Infernal
DEVILISH	Mischievous
DEVILISH	Mephistophelian
DEVILISH	Infernal and diabolical
DEVILISH	Satanic

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.