Agglutinative language

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An agglutinative language is a type of synthetic language with morphology that primarily uses agglutination. In an agglutinative language, words contain multiple morphemes concatenated together, but in such a manner that individual word stems and affixes can be isolated and identified as to indicate a particular inflection or derivation, although this is not a rule: for example, Finnish is a typical agglutinative language, but morphemes are subject to (sometimes unpredictable) consonant alternations called consonant gradation.

Despite the occasional outliers, agglutinative languages tend to have more easily deducible word meanings compared to fusional languages, which allow unpredictable modifications in either or both the phonetics or spelling of one or more morphemes within a word, usually resulting from a shortening of the word or to make pronunciation easier.