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
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A closely related concept is the analytic language, which in the extreme case does not use any inflections to indicate grammatical relationships (but which may still form compound words or may change the meanings of individual words with derivational morphemes, either of which processes gives more than one morpheme per word).
Isolating languages are especially common in Southeast Asia.
Isolating languages are in contrast to synthetic languages, where words often consist of multiple morphemes. That linguistic classification is subdivided into the classifications fusional, agglutinative, and polysynthetic, which are based on how the morphemes are combined.