Definition - The Saussurean term for any speech act.
Note: As opposed to langue, the particular language system the speech act is a part of. In other words, saying something we want to say is parole, whereas the set of rules and conventions that our language restricts us to use is langue.

Example -

(1) "How's it going" (parole)
(2) English (langue)

Etymology -
The technical term derives from the French parole in sense "(spoken) word or utterance."

Oxford English Dictionary -
The first citation for the term in this sense is from 1935:
"The utterance occurs, it is speech, ‘parole’; the form exists, so to say, it is a part of the language ‘langue’."
(W. F. Twaddell in Lang. Monogr. XVI. 40)

Quotation -
"Let us follow de Saussure, and say that all those who ‘speak English’ (or are ‘speakers of English’) share a particular langue and that the set of utterances which they produce when they are ‘speaking English’ constitute instances of parole."
(Source: 1968 J. Lyons Introd. Theoret. Linguistics i. 51)

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