Here's what rhymes with transitionalcell.
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 prevail email travail inhale quail quale braille mainsail topsail unveil foresail grail monorail wassail hightail lugsail detail entail curtail exhale bewail derail impale martingale taffrail bobtail pellmell carrell fingernail gunwale pigtail countervail nonpareil swallowtail hangnail ponytail tattletale