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