Extra rhymes with:
dextra, xtra, dextra, dykstra, hoekstra, hukstra, xtra, astra, balestra, boonstra, bostra, costra, dextra, dykstra, feenstra, hamstra, heemstra, heidstra, hiemstra, hoekstra, hofstra, hukstra, hydstra, kamstra, kustra, lastra, maestra, nostra, olestra, orchestra, rienstra, spoelstra, telstra, terpstra, tuinstra, veenstra, westra, xtra, zandstra, zylstra
Extra sounds like:
easter, ector, ecuador, equator, escudero, ester, esther, estuary, executor, exeter, exterior, eyster