Historical linguistics

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Historical linguistics, also known as diachronic linguistics, is the scientific study of how languages change over time.^[1] It seeks to understand the nature and causes of linguistic change and to trace the evolution of languages. Historical linguistics involves several key areas of study, including the reconstruction of ancestral languages, the classification of languages into families, (comparative linguistics) and the analysis of the cultural and social influences on language development.^[2][3]

This field is grounded in the Uniformitarian Principle, which posits that the processes of language change observed today were also at work in the past, unless there is clear evidence to suggest otherwise.^{[4][not verified in body]} Historical linguists aim to describe and explain changes in individual languages, explore the history of speech communities, and study the origins and meanings of words (etymology).^[5]