Here's what rhymes with nailtail.
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 mainsail grail impale hightail prevail travail inhale pigtail topsail unveil foresail martingale monorail taffrail bobtail wassail pellmell lugsail carrell exhale gunwale ponytail nonpareil swallowtail fingernail countervail hangnail tattletale