Answer: whack

AnswerCrossword Clue
WHACKHit plenty hard
whackto strike sharply
whacksmart blow
whackto produce quickly or, sometimes, carelessly
whackout of order or alignment; not in proper condition
whackto cut off or separate with a blow
whackto strike sharply
whackto masturbate
WHACKMurder, in mobspeak
WHACKBuffet
WHACKStab
WHACKWallop
WHACKTake a paddle to
WHACKHit with a bang
WHACKBump off
WHACKSlap hard
WHACKResounding blow
WHACKOut of ... (kaput)
WHACKBlow.
WHACKClout
WHACKSharp blow
WHACKAttempt
WHACKOut of .. (amiss)
WHACKOff, in mobspeak
WHACKBelt
WHACKHit sharply
WHACKHit hard