Morphological typology

Morphological typology is a way of classifying the languages of the world that groups languages according to their common morphological structures. The field organizes languages on the basis of how those languages form words by combining morphemes. Analytic languages contain very little inflection, instead relying on features like word order and auxiliary words to convey meaning. Synthetic languages, ones that are not analytic, are divided into two categories: agglutinative and fusional languages. Agglutinative languages rely primarily on discrete particles (prefixes, suffixes, and infixes) for inflection, while fusional languages "fuse" inflectional categories together, often allowing one word ending to contain several categories, such that the original root can be difficult to extract. A further subcategory of agglutinative languages are polysynthetic languages, which take agglutination to a higher level by constructing entire sentences, including nouns, as one word.

Analytic, fusional, and agglutinative languages can all be found in many regions of the world. However, each category is dominant in some families and regions and essentially nonexistent in others. Analytic languages encompass the Sino-Tibetan family, including Chinese, many languages in Southeast Asia, the Pacific, and West Africa, and a few of the Germanic languages. Fusional languages encompass most of the Indo-European family—for example, French, Russian, and Hindi—as well as the Semitic family and a few members of the Uralic family. Most of the world's languages, however, are agglutinative, including the Turkic, Japonic, Dravidian, and Bantu languages and most families in the Americas, Australia, the Caucasus, and non-Slavic Russia. Constructed languages take a variety of morphological alignments.

The concept of discrete morphological categories has been criticized. Some linguists argue that most, if not all, languages are in a permanent state of transition, normally from fusional to analytic to agglutinative to fusional again. Others take issue with the definitions of the categories, arguing that they conflate several distinct, if related, variables.

The field was first developed by brothers Friedrich von Schlegel and August von Schlegel.^{[citation needed]}

Analytic languages show a low ratio of morphemes to words; in fact, the correspondence is nearly one-to-one. Sentences in analytic languages are composed of independent root morphemes. Grammatical relations between words are expressed by separate words where they might otherwise be expressed by affixes, which are present to a minimal degree in such languages. There is little to no morphological change in words: they tend to be uninflected. Grammatical categories are indicated by word order (for example, inversion of verb and subject for interrogative sentences) or by bringing in additional words (for example, a word for "some" or "many" instead of a plural inflection like English -s). Individual words carry a general meaning (root concept); nuances are expressed by other words. Finally, in analytic languages context and syntax are more important than morphology.

Analytic languages include some of the major East Asian languages, such as Chinese, and Vietnamese. Note that the ideographic writing systems of these languages play a strong role in regimenting linguistic continuity according to an analytic, or isolating, morphology (cf. orthography).^{[citation needed]}

Additionally, English is moderately analytic, and it and Afrikaans can be considered as some of the most analytic of all Indo-European languages. However, they are traditionally analyzed as fusional languages.

A related concept is the isolating language, one in which there is only one, or on average close to one, morpheme per word. Not all analytic languages are isolating; for example, Chinese and English possess many compound words, but contain few inflections for them.