Avail rhymes with:
kvale, travail, carvell, kvale, lavell, levell, prevail, revell, savell, surveil, travail, unveil, vail, vaile, vale, valle, veil
Avail sounds like:
abbeville, abel, abela, abele, abell, abella, abelow, abila, abiola, able, ably, abuellah, affable, affably, afoul, afula, apel, apfel, apollo, appall, appeal, appel, appell, apple, apply, aubel, auble, auvil, avella, aviall, avila, avilla, avolio, awful, awfully