Ummel rhymes with:
brummel, brummell, huml, hummel, hummell, krummel, pummel, rummel, rummell, abnormal, abysmal, aimal, almal, animal, anytime'll, atmel, baptismal, baumel, bermel, bluemel, bramel, broomall, brummel, brummell, camel, caramel, decimal, demel, dermal, dismal, duhamel, elommal, emel, emmel, enamel, endodermal, epidermal, formal, gamel, gammel, gammell, gemmell, gemmill, geothermal, gomoll, habermehl, hamal, hamel, hamil, hamill, hammel, hammell, hammill, harmel, hemel, himel, himmel, hommel, hovermale, huml, hummel, hummell, hydrothermal, hymel, imel, immel, infinitesimal, informal, isothermal, kamal, kamel, kimel, kimmel, kimmell, komsomol, krimmel, krummel, kurmel, mammal, maximal, memel, mesodermal, minimal, normal, optimal, paranormal, pommel, primal, proximal, pummel, ramel, rammel, remmel, rimel, romel, rommel, rothermel, rotramel, rummel, rummell, scammell, schamel, schemel, schemmel, schimmel, semel, semmel, shamel, shimel, shimmel, siemel, steimel, steimle, stimmel, thermal, tramel, trammel, trammell, tremel, treml, tremmel, tsemel, turmel, zemel