Register (sociolinguistics)

Form of language used for a particular purpose or in a particular communicative situation

In sociolinguistics, a register is a variety of language used for a particular purpose or particular communicative situation. For example, when speaking officially or in a public setting, an English speaker may be more likely to follow prescriptive norms for formal usage than in a casual setting, for example, by pronouncing words ending in -ing with a velar nasal instead of an alveolar nasal, choosing words that are considered more formal, such as father vs. dad or child vs. kid, and refraining from using words considered nonstandard, such as ain't and y'all.

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