Yeast rhymes with:
bankeast, beast, ceased, deceased, decreased, east, feast, fleeced, greased, increased, keast, leased, least, northeast, pieced, policed, priest, released, se, southeast, teast, toniest, trendiest, trieste, unreleased, vannest, weast
Yeast sounds like:
yacht, yagoda, yasuda, yest, yoast, yoest, yokado, yoked, yokota, yoshida, yost, yust