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