Orsak rhymes with:
borsuk, borsuk, bohnsack, bolancik, borsuk, bosak, bowersock, cassock, cossack, hartsock, hosack, hossack, husak, issac, kissack, kosak, lebsack, lisak, lissack, mckissack, osuch, prusak, prussak, russak, spisak, vlasak
Orsak sounds like:
o'hara's, o'roark, o'rourke, oars, ohara's, orca, orcas, ores, org, orgies, orgy, orick, orix, orks, orky, oroark, oros, orosco, orosz, orourke, orozco, orrick, orrico, orris, orsa, orsay, orsi, orso, orwick, orwig, oryx, orzech, orzechowski, ours, ourso