The Altaic languages are a controversial family of languages of Eurasia. The usually accepted members of this family include the Turkic, Mongolian, and Tungusic language families. Some linguists place Japanese and Korean in this family because all the Altaic languages are agglutinative, meaning that words and phrases are formed by putting together related syllables.
A number of linguists place the Uralic languages with the Altaic family to form the Ural-Altaic languages because the Uralic languages are aggultinative, just like the Altaic languages.