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