Tremmel rhymes with:
tremel, treml, remmel, tremel, treml, demel, emel, emmel, gemmell, gemmill, hemel, memel, remmel, schemel, schemmel, semel, semmel, tremel, treml, tsemel, zemel
Tremmel sounds like:
terminal, terminally, thermal, thornell, thornhill, thornley, tramel, tramell, tramiel, trammel, trammell, tremel, treml, triennial, trunnell, turmel, turmoil, turnley