Kosmetsky's rhymes with:
boesky's, boeskys, gazonsky's, husky's, izansky's, joske's, kaczynski's, kosnovsky's, koznovsky's, levinsky's, lewensky's, lewinsky's, lonsky's, mezvinsky's, muskie's, olkowski's, olshansky's, olshefski's, orloski's, orlosky's, orlowski's, radowski's, rostenkowski's, sitenski's, sitenskis, sorovski's, stravinsky's, tchaikovsky's, whiskeys, yevlinsky's, zhirinovsky's
Kosmetsky's sounds like:
kanitz, kantz, kemnitz, kendig, kenetech, kennedy's, kennedys, kennedys', kent's, kentucky, kentucky's, keynotes, kienitz, kientz, kindig, kinds, kinetic, kinetics, kintigh, kintz, kismets, kmetz, knits, knotek, knots, knott's, knotts, knuts, komatsu, kondas, kontos, koonts, koontz, kosmatka, kosmetsky, kountz, kuntz, kuntze, kuznets