Whomever rhymes with:
bever, clever, devore, endeavor, endeavour, ever, forever, grever, haver, however, kever, klever, kochevar, lever, mcever, morever, never, sever, trevor, whatever, whatsoever, whenever, wherever, whichever, whoever, whomsoever, whosoever
Whomever sounds like:
whenever, whimper, winberry, winfree, winfrey