Reduplication

In linguistics, reduplication is a morphological process in which the root or stem of a word, part of that, or the whole word is repeated exactly or with a slight change.

The classic observation on the semantics of reduplication is Edward Sapir's: "Generally employed, with self-evident symbolism, to indicate such concepts as distribution, plurality, repetition, customary activity, increase of size, added intensity, continuance." It is used in inflections to convey a grammatical function, such as plurality or intensification, and in lexical derivation to create new words. It is often used when a speaker adopts a tone more expressive or figurative than ordinary speech and is also often, but not exclusively, iconic in meaning. It is found in a wide range of languages and language groups, though its level of linguistic productivity varies. Examples can be found in language as old as Sumerian, where it was used in forming some color terms, e.g. babbar "white", kukku "black".

The most recent major contribution and reference on reduplication is by Dariush Borbor's Dictionary of Reduplication which gives a comprehensive, classified listing of reduplicates in Arabic, Armenian, Kurdish, Persian and Turkish, the major languages of the Middle East and Iran.

Reduplication is the standard term for this phenomenon in the linguistics literature. Other occasional terms include cloning, doubling, duplication, repetition, and tautonymy (when it is used in biological taxonomies, such as Bison bison).