Here's what rhymes with mrell.
rail ail ale 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 braille kale grail faille wale scale avail entail email stale assail inhale quail snail quale derail unveil impale carrell detail prevail travail curtail bewail gunwale mainsail foresail monorail taffrail wassail pellmell hightail lugsail exhale pigtail ponytail topsail martingale bobtail nonpareil hangnail fingernail countervail swallowtail tattletale