1926, echoic of the sound of a heavy blow or something falling heavily.
whomp (v.)
1952, from whomp (n.). Related: Whomped; whomping.
wholesome
wholistic
wholly
whom
whomever
whomp
whoop
whoopee
whoops
whoosh
whoot
)window.location='https://www.paypal.com/cgi-bin/webscr?cmd=_donations&business=byronic106@yahoo.com&lc=US&item_name=Donation+to +Help+Keep+Etymonline+Free+and+Open&no_note=0&cn=&curency_code=USD&bn=PP-DonationsBF:btn_donateCC_LG.gif:NonHosted'){kind=link}