An isolating language is 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. 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).
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