Answer:

whack

Answer	Crossword Clue
WHACK	Bump off
WHACK	Hit hard
WHACK	Hit sharply

WHACK	Belt
WHACK	Off, in mobspeak
WHACK	Out of .. (amiss)
WHACK	Attempt
WHACK	Sharp blow
WHACK	Clout
WHACK	Blow.
WHACK	Out of ... (kaput)

WHACK	Resounding blow
WHACK	Slap hard
WHACK	Hit plenty hard
WHACK	Hit with a bang
WHACK	Take a paddle to
WHACK	Wallop
WHACK	Stab
WHACK	Buffet

WHACK	Murder, in mobspeak

Crossword

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