Gustaf rhymes with:
gustav, chertoff, gustav, khasbulatov, behof, behoff, chertoff, degraaf, gustav, khasbulatov, olaf, ornoff, oshaf, schulhauf, smirnov
Gustaf sounds like:
gadhafi, gestapo, ghadafi, godbee, godbey, godby, godiva, good-bye, goodby, goodbye, goodtab, gostev, gustav, gustava, gustave, gustavo