Answer: wallop

AnswerCrossword Clue
WALLOPBeat but good
WALLOPSlug
WALLOPPowerful blow: Slang.
WALLOPDefeat convincingly: Colloq.
WALLOPHard punch
WALLOPClout
WALLOPWhat Louis packed
WALLOPWhat Holyfield packs
WALLOPSlug but good
WALLOPBeat, and how!
WALLOPSmack hard
WALLOPLambaste
WALLOPClobber
WALLOPBeat soundly
WALLOPPunch hard
WALLOPStrong punch
wallopto beat soundly
wallophard blow
wallopto thrash or defeat
WALLOPPaste in the ring
WALLOPSock
WALLOPSock or belt
WALLOPDefeat convincingly
WALLOPDefeat decisively
WALLOPBelt
WALLOPBelt or sock
WALLOPLong homer, say
WALLOPPaste, in a way
WALLOPDeliver a haymaker
WALLOPHard hit
WALLOPHit, and how!
WALLOPBig bop
WALLOPReally slug
WALLOPHit hard
WALLOPDefeat utterly
WALLOPIt might be packed
WALLOPThrash