agglutinative, agglutinating: Agglutinative (or agglutinating) languages are those which often combine their stems with many affixes to form long words. Many languages of Mexico are agglutinative, some more than others. For example, the word nehualmoyecastemojmolunijtzinutinemisquiöni in Mösiehuali has 18 syllables and requires a rather long sentence to translate it. Contrast: isolating, fusional. [Spanish: aglutinante]