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