Penguin rhymes with:
goguen, nicaraguan, arwen, awan, baldwin, chautauquan, edwin, gawain, genuine, goguen, harlequin, hudwon, iowan, irwin, iwen, kerwen, mequon, nicaraguan, radwan, salwen, sequin, shawhan, urwin
Penguin sounds like:
pankonin, panmunjom, pengassan, pennsauken, pension, penson, phoenician, pi-meson, pinckney, pinkham, pinkney, pinshan, pinson, pinzon, pomicino, ponchan, punkin