Answer:

dumb

Answer	Crossword Clue
DUMB	Word with luck or waiter
DUMB	Word after play or before luck
DUMB	Word said three times while smacking the forehead

DUMB	Cry made repeatedly while slapping the forehead
DUMB	Sharp's opposite
DUMB	Half-baked
DUMB	Boneheaded
DUMB	Senseless
DUMB	Word before luck or cluck
DUMB	Inane
DUMB	Slow

DUMB	Moronic
DUMB	One way to be struck
DUMB	Hardly Einsteinian
DUMB	Asinine
DUMB	Like some errors
DUMB	Half-witted
DUMB	Slow-witted
DUMB	Speechless

DUMB	Type of luck