Word
A word is a basic element of language that carries meaning, can be used on its own, and is uninterruptible.[1] Despite the fact that language speakers often have an intuitive grasp of what a word is, there is no consensus among linguists on its definition and numerous attempts to find specific criteria of the concept remain controversial.[2] Different standards have been proposed, depending on the theoretical background and descriptive context; these do not converge on a single definition.[3]: 13:618 Some specific definitions of the term "word" are employed to convey its different meanings at different levels of description, for example based on phonological, grammatical or orthographic basis. Others suggest that the concept is simply a convention used in everyday situations.[4]: 6
This article is about the unit of speech and writing. For the computer software, see Microsoft Word. For other uses, see Word (disambiguation).
The concept of "word" is distinguished from that of a morpheme, which is the smallest unit of language that has a meaning, even if it cannot stand on its own.[1] Words are made out of at least one morpheme. Morphemes can also be joined to create other words in a process of morphological derivation.[2]: 768 In English and many other languages, the morphemes that make up a word generally include at least one root (such as "rock", "god", "type", "writ", "can", "not") and possibly some affixes ("-s", "un-", "-ly", "-ness"). Words with more than one root ("[type][writ]er", "[cow][boy]s", "[tele][graph]ically") are called compound words. In turn, words are combined to form other elements of language, such as phrases ("a red rock", "put up with"), clauses ("I threw a rock"), and sentences ("I threw a rock, but missed").
In many languages, the notion of what constitutes a "word" may be learned as part of learning the writing system.[5] This is the case for the English language, and for most languages that are written with alphabets derived from the ancient Latin or Greek alphabets. In English orthography, the letter sequences "rock", "god", "write", "with", "the", and "not" are considered to be single-morpheme words, whereas "rocks", "ungodliness", "typewriter", and "cannot" are words composed of two or more morphemes ("rock"+"s", "un"+"god"+"li"+"ness", "type"+"writ"+"er", and "can"+"not").
The task of defining what constitutes a "word" involves determining where one word ends and another word begins — that is, identifying word boundaries. There are several ways to determine where the word boundaries of spoken language should be placed:[5]
Philosophy
Philosophers have found words to be objects of fascination since at least the 5th century BC, with the foundation of the philosophy of language. Plato analyzed words in terms of their origins and the sounds making them up, concluding that there was some connection between sound and meaning, though words change a great deal over time. John Locke wrote that the use of words "is to be sensible marks of ideas", though they are chosen "not by any natural connexion that there is between particular articulate sounds and certain ideas, for then there would be but one language amongst all men; but by a voluntary imposition, whereby such a word is made arbitrarily the mark of such an idea".[16] Wittgenstein's thought transitioned from a word as representation of meaning to "the meaning of a word is its use in the language."[17]
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Morphology is the study of word formation and structure. Words may undergo different morphological processes which are traditionally classified into two broad groups: derivation and inflection. Derivation is a process in which a new word is created from existing ones, with an adjustment to its meaning and often with a change of word class. For example, in English the verb to convert may be modified into the noun a convert through stress shift and into the adjective convertible through affixation. Inflection adds grammatical information to a word, such as indicating case, tense, or gender.[14]: 73
In synthetic languages, a single word stem (for example, love) may inflect to have a number of different forms (for example, loves, loving, and loved). However, for some purposes these are not usually considered to be different words, but rather different forms of the same word. In these languages, words may be considered to be constructed from a number of morphemes.
In Indo-European languages in particular, the morphemes distinguished are:
Thus, the Proto-Indo-European *wr̥dhom would be analyzed as consisting of
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History
In ancient Greek and Roman grammatical tradition, the word was the basic unit of analysis. Different grammatical forms of a given lexeme were studied; however, there was no attempt to decompose them into morphemes.[21]: 70 This may have been the result of the synthetic nature of these languages, where the internal structure of words may be harder to decode than in analytic languages. There was also no concept of different kinds of words, such as grammatical or phonological – the word was considered a unitary construct.[4]: 269 The word (dictiō) was defined as the minimal unit of an utterance (ōrātiō), the expression of a complete thought.[21]: 70