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