Answer:

OOF

Answer	Crossword Clue
OOF	Punch-in-the-stomach word
OOF	Sock-in-the-gut sound
OOF	Exclamation

OOF	Punched-in-the-stomach utterance
OOF	Punch response
OOF	Gut reaction?
OOF	Punch-in-the-gut sound
OOF	Punch-in-the-gut reaction
OOF	"This sure is heavy!"
OOF	Cartoon-punch response
OOF	Sound spelled out in a 1962 Edward Ruscha painting

OOF	Stomach punch reaction
OOF	Punch-in-the-stomach sound effect
OOF	Cry of pain
OOF	Punch-in-the-stomach reaction
OOF	Stomach-punch reaction
OOF	Reaction to a slug
OOF	Gut-punch reaction
OOF	Sock-in-the-gut grunt

OOF	Punch-in-the-gut grunt
OOF	Gut-punch response
OOF	"That knocked the wind out of me!"
OOF	"Pow!" response
OOF	Punched-in-the-gut sound
OOF	"Batman" sound effect
OOF	Punched-in-the-gut grunt
OOF	Sock-in-the-gut response

OOF	Response to "POW!"
OOF	"Ouch!" relative
OOF	Cartoon response to a punch
OOF	Campy sound of battle
OOF	Stomach-punching sound
OOF	Punch-in-the-stomach response
OOF	Gut-punch grunt
OOF	1960s "Batman" sound effect

OOF	Body blow grunt
OOF	Pained expression?
OOF	Sound from the socked
OOF	Winded grunt?
OOF	Comic strip reaction to a punch