Here's what rhymes with tunnelvault.
saw ha sa thaw faw haa sha shah hah haw sough soh law la raw da jaw ma na pa ta wa ya fhall flaw ja ka ra ga paw spa waa cha gnaw maw ois aha baa bah nah rah yaw caw slaw pshaw loofah rawer markkaa draw straw qua claw foresaw bra moi trois ulna alga bois squaw travaux blah hurrah overawe pasha craw fuchsia guffaw lockjaw macaw panama borzois bourgeois inlaw chamois oversaw voila redraw pawpaw uninstall southpaw geegaw withdraw patois baccarat jackdaw mackinaw overdraw outdraw scofflaw