Polysynthetic languages are highly synthetic languages, for example, languages in which words are composed of many morphemes. Not all languages can be easily classified as being completely polysynthetic. Morpheme and word boundaries are not always clear cut, and languages may be highly synthetic in one area but less synthetic in other areas (compare verbs and nouns in Southern Athabaskan languages). Definition The degree of synthesis refers to the morpheme-to-word ratio. Languages with more tha… (More on Polysynthesis)