Kopera rhymes with:
shapira, shapira, spira, aguirra, almira, altamira, ancira, baltierra, chavira, ferriera, hera, indira, kucera, lira, lire, madeira, magiera, mbira, mira, mirra, palmira, panciera, rovira, sadira, salvatierra, saphira, semira, sera, shapira, shira, shirah, spira, taira, tejera, valtierra, vierra
Kopera sounds like:
kafer, kapfer, kapoor, kapor, kapper, kapur, kaspar, kasper, kaufer, kaypro, keefer, keeper, keever, kefauver, keffer, keifer, keiffer, keiper, kever, kiefer, kieffer, kieper, kifer, kiper, kipfer, kipper, kippur, kober, kochevar, koper, kopper, kovar, kover, kuiper, kuper, kupfer, kupor, kupper, kuyper