tüvekeel (nt hiina keel), mis väljendab sõnade grammatilisi vahekordi pms sõnade järjekorra, intonatsiooni, abisõnade jm kaudu, mitte seotud morfeemide abil, a language in which all words are invariable and their interrelationship in the sentence is indicated solely by their relative positions and connective words, a type of language with a low morpheme-per-word ratio – in the extreme case of an isolating language words are composed of a single morpheme