Productivity (linguistics)

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In linguistics, productivity is the degree to which native speakers use a particular grammatical process, especially in word formation. It compares grammatical processes that are in frequent use to less frequently used ones that tend towards lexicalization. Generally the test of productivity concerns identifying which grammatical forms would be used in the coining of new words: these will tend to only be converted to other forms using productive processes.

Examples in English[edit]

In standard English, the formation of preterite and past participle forms of verbs by means of ablaut (for example, singsangsung) is no longer considered productive. Newly coined verbs in English overwhelmingly use the 'weak' (regular) ending -ed for the past tense and past participle (for example, spammed, e-mailed). Similarly, the only clearly productive plural ending is -(e)s; it is found on the vast majority of English count nouns and is used to form the plurals of neologisms, such as FAQs and Muggles. The ending -en, on the other hand, is no longer productive, being found only in oxen, children, and the now-rare brethren. Because these old forms can sound incorrect to modern ears, regularization can wear away at them until they are no longer used: brethren has now been replaced with the more regular-sounding brothers except when talking about religious orders. It appears that many strong verbs were completely lost during the transition from Old English to Middle English, possibly because they sounded archaic or were simply no longer truly understood.

In both cases, however, occasional exceptions have occurred. A false analogy with other verbs caused dug to become thought of as the 'correct' preterite and past participle form of dig (the conservative King James Bible preferred digged in 1611) and more recent examples, like snuck from sneak and dove from dive, have similarly become popular. In the hacker sociolect, the plural -en also became at least ephemerally productive for words ending with /-ks/ (on the analogy of ox:oxen), as illustrated by the plurals boxen, VAXen, unixen and emacsen. These recent examples, however, are exceptions: generally created for humorous effect, they have mostly not entered the mainstream language or become thought of as correct.


Since use to produce novel (new, non-established) structures is the clearest proof of usage of a grammatical process, the evidence most often appealed to as establishing productivity is the appearance of novel forms of the type the process leads one to expect, and many people would limit the definition offered above to exclude use of a grammatical process that does not result in a novel structure. Thus in practice, and, for many, in theory, productivity is the degree to which native speakers use a particular grammatical process for the formation of novel structures. A productive grammatical process defines an open class, one which admits new words or forms. Non-productive grammatical processes may be seen as operative within closed classes: they remain within the language and may include very common words, but are not added to and may be lost in time or through regularization converting them into what now seems to be a correct form.

Productivity is, as stated above and implied in the examples already discussed, a matter of degree, and there are a number of areas in which that may be shown to be true. As the example of -en becoming productive shows, what has apparently been non-productive for many decades or even centuries may suddenly come to some degree of productive life, and it may do so in certain dialects or sociolects while not in others, or in certain parts of the vocabulary but not others. Some patterns are only very rarely productive, others may be used by a typical native speaker several times a year or month, whereas others (especially syntactic processes) may be used productively dozens or hundreds of times in a typical day. It is not atypical for more than one pattern with similar functions to be comparably productive, to the point that a speaker can be in a quandary as to which form to use —e.g., would it be better to say that a taste or color like that of raisins is raisinish, raisiny, raisinlike, or even raisinly?

It can also be very difficult to assess when a given usage is productive or when a person is using a form that has already been learned as a whole. Suppose a reader comes across an unknown word such as despisement meaning "an attitude of despising". The reader may apply the verb+ment noun-formational process to understand the word perfectly well, and this would be a kind of productive use. This would be essentially independent of whether or not the writer had also used the same process productively in coining the term, or whether he or she had learned the form from previous usage (as most English speakers have learned government, for instance), and no longer needed to apply the process productively in order to use the word. Similarly a speaker or writer's use of words like raisinish or raisiny may or may not involve productive application of the noun+ish and noun+y rules, and the same is true of a hearer or reader's understanding of them. But it will not necessarily be at all clear to an outside observer, or even to the speaker and hearer themselves, whether the form was already learnt and whether the rules were applied or not.

English and productive forms[edit]

Developments over the last five hundred years or more have meant English has developed in ways very different from the evolution of most world languages across history. English is a language with a long written past that has preserved many words that might otherwise have been lost or changed, often in fixed texts such as the King James Version of the Bible which are not updated regularly to modernise their language. English also has many conventions for writing polite and formal prose, which are often very different from how people normally speak. As literacy among native English speakers has become almost universal, it has become increasingly easy for people to bring back into life archaic words and grammar forms, often to create a comic or humorously old-fashioned effect, with the expectation that these new coinings will be understandable. These processes would be much rarer for languages without a culture of literacy.

English has also borrowed extensively from other languages because of technology and trade, often borrowing plural forms as well as singular ones into standard English. For example, the plural of radius (from Latin) has not decisively settled between radiuses and the original Latin radii, though educated opinion prefers the latter. In some cases, new words have been coined from these bases (often Latin) on the same rules.

See also[edit]


  • Baayen, Harald. (1992). Quantitative aspects of morphological productivity. In G. Booij & J. van Marle (Eds.), Yearbook of morphology, 1991. Dordrecht: Kluwer Academic Publishers, 109–149. ISBN 0-7923-1416-6.
  • Baayen, Harald & Rochelle Lieber. (1991). Productivity and English derivation: A corpus-based study. Linguistics 29, 801-844.
  • Bauer, Laurie. (2001). Morphological productivity. Cambridge studies in linguistics (No. 95). Cambridge: Cambridge University Press. ISBN 0-521-79238-X.
  • Bolozky, Shmuel. (1999). Measuring productivity in word formation. Leiden: Brill. ISBN 90-04-11252-9.
  • Hay, Jennifer & Harald Baayen. (2002). Parsing and productivity. In G. Booij & J. van Marle (Eds.), Yearbook of morphology, 2002, 203–35. Dordrecht: Kluwer.
  • Palmer, Chris C. (2015). Measuring productivity diachronically: nominal suffixes in English letters, 1400–1600. English Language and Linguistics, 19, 107-129. doi:10.1017/S1360674314000264.
  • Plag, Ingo. (1999). Morphological productivity: Structural constraints in English derivation. Topics in English linguistics (No. 28). Berlin: Mouton de Gruyter. ISBN 3-11-015833-7.
  • Säily, Tanja. (2014). Sociolinguistic variation in English derivational productivity: Studies and methods in diachronic corpus linguistics. Helsinki: Société Néophilologique.
  • Schröder, Anne. (2011). On the productivity of verbal prefixation in English: Synchronic and diachronic perspectives. Tübingen: Narr.
  • Trips, Carola. (2009). Lexical semantics and diachronic morphology: The development of -hood, -dom and -ship in the history of English. Tübingen: Niemeyer.