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