WestSubgroup of 9 languagesAncestorsIndo-European 454Balto-Slavic 31Slavic 24WestCollapse All Expand AllCzech-Slovak 3Czech ces, a language of CzechiaKnaanic czk, a language of CzechiaSlovak slk, a language of SlovakiaLechitic 4Kashubian csb, a language of PolandPolish pol, a language of PolandPolabian pox, a language of GermanySilesian szl, a language of PolandSorbian 2Sorbian, Lower dsb, a language of GermanySorbian, Upper hsb, a language of Germany