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