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