WestSubgroup of 9 languagesAncestorsIndo-European 455Balto-Slavic 31Slavic 24WestDescendants Czech-Slovak 3Czech ces, a language of CzechiaKnaanic czk, a language of CzechiaSlovak slk, a language of Slovakia Lechitic 4Kashubian csb, a language of PolandPolabian pox, a language of GermanyPolish pol, a language of PolandSilesian szl, a language of Poland Sorbian 2Sorbian, Lower dsb, a language of GermanySorbian, Upper hsb, a language of Germany