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