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