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