THWACK

n. 25B6; verb (informal) HIT, strike, slap, smack, cuff, punch, thump; beat, thrash, batter, belabour, pound, pummel, box someone's ears; whip, flog, cane; informal whack, wallop, bash, biff, bop, lam, clout, clobber, sock, swipe, crown, beat the living daylights out of, give someone a (good) hiding, belt, tan, lay into, let someone have it, deck, floor; Brit. informal stick one on, slosh; N. Amer. informal slug, boff; poetic/literary smite.