An agglutinative language is a type of synthetic language with morphology that primarily uses agglutination. Words may contain different morphemes to determine their meanings, but all of these morphemes (including stems and affixes) tend to remain unchanged after their unions, 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, and the so-called "ta" and "te" forms of Japanese (also an agglutinative language) fuse with the stem in regular but phonetically unpredictable ways (for example the "te-form" of 切る kiru is 切って kitte and not *kiru-te) . Despite those occasional alternations, agglutinative languages tend to have more easily deducible word meanin