Here's what rhymes with fiail.
male scale fail mail sale pale sail tail tale jail nail rail veil frail gale hail shale whale bail email stale vale wail bale dale pail snail flail hale kale faille wale trail avail assail quail quale braille grail hightail detail entail curtail inhale exhale bewail derail pigtail unveil foresail impale taffrail wassail carrell prevail travail gunwale mainsail ponytail topsail monorail bobtail pellmell hangnail lugsail fingernail swallowtail countervail martingale nonpareil tattletale