Oghur

bolgártörök

(language family, subfamily of Turkic, of which Chuvash is the only surviving member)

csuvasos

(language family, subfamily of Turkic, of which Chuvash is the only surviving member)

csuvasos török

(language family, subfamily of Turkic, of which Chuvash is the only surviving member)

lir-török

(language family, subfamily of Turkic, of which Chuvash is the only surviving member)

nyugati ótörök

(language family, subfamily of Turkic, of which Chuvash is the only surviving member)

ogur

(language family, subfamily of Turkic, of which Chuvash is the only surviving member)

ogur-török

(language family, subfamily of Turkic, of which Chuvash is the only surviving member)

r-török

(language family, subfamily of Turkic, of which Chuvash is the only surviving member)