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