Green’s Dictionary of Slang

1. to hit; also fig. use; thus whomping n., a beating.

c.1930		(ref. to 1868) N. Kimball Amer. Madam (1981) 52: I didn’t dare use her rouge or liquid powder; my father would have whomped me to bits.
1959		H. Ellison ‘Have Coolth’ in Gentleman Junkie (1961) 129: He [...] had this leather glove full of nickels raised to whomp me.
1967		J. Schaefer Mavericks (1968) 103: I’d give you a whompin’ you’d remember. [Ibid.] 104: Won’t be long afore mebbe your own ol’ man’ll be whompin’ you like you ought to be.
1968		‘Hy Lit’ Hy Lit’s Unbelievable Dict. of Hip Words 52: womp – To beat or wipe out another team.
1972		B. Rodgers Queens’ Vernacular 213: whomp on somebody’s head [...] to cause someone mischief; to beat someone.
1973		C. Gaines Stay Hungry 124: Life whomped him from behind.
1981		J. Wambaugh Glitter Dome (1982) 172: The street monsters waited until they heard the terrified shouts and running feet and frantic deputies whomping on the fighter with sticks.
1991		B. Hamper Rivethead (1992) 138: That maniac could’ve whomped on a grizzly.
1997–2000		College Sl. Research Project (Cal. State Poly. Uni., Pomona) 🌐 Whomp (verb) To beat, to hit.
2001		J. Stahl Plainclothes Naked (2002) 37: Carmella whomped the drawer shut with her buttocks.
2023		(con. 1962) J. Ellroy Enchanters 8: Harry and Eddie whomped him with sap gloves.

2. to make a loud low noise.

1949		R. Park Poor Man’s Orange 85: The door next to hers whumped into its ill-fitting lock.
1966		(con. 1958) R. Farina Been Down So Long (1972) 81: The gun whomped, [...] and the rabbit flopped into the air.

3. to move aggressively .

1978

R. De Christoforo Grease 48: We whomped down an alley of the drive-in.

4. (US) to defeat, to trounce.

1952		Britannica Bk of Year 667/1: Whomp, to defeat decisively.
1955		K. Vonnegut ‘Der Arme Dolmetscher’ in Bagombo Snuff Box (1999) 187: We’ll whomp ’em the way we whomped ’em in Nawth Ca’lina and Tennessee.
1970		D. Jenkins Saturday’s America 39: Not only did the Cadets whomp Navy 38-0, but [etc].
1988		Eble Campus Sl. Oct. 11: womp – defeat thoroughly.

5. to have sexual intercourse.

1989		Eble Campus Sl. Mar. 9: womp – have sexual intercourse.
1989		P. Munro Sl. U. 207: womp on to have sex with.
1999		J. Poller Reach 37: Only when you’ve all but agreed to whump each other senseless is it permissible to sidle up to the Durex dispenser in the bogs.