Here's what rhymes with lacuna.
tuna duenna vicuna Words that almost rhyme with lacuna
summa puma satsuma ua hua tua hula scuba tuba chukka doodah supra sutra macula pupa stupa barracuda bazooka pukka louvre scrofula hallelujah helluva beluga appaloosa fistula manoeuvre incunabula outmanoeuvre