Contact-Induced Change and Borrowing

How languages change through contact with one another, from the borrowing of words and sounds to deep structural convergence and the formation of new contact languages.

Definition

Contact-induced change is change in a language resulting from contact with one or more other languages, including borrowing of lexical items and structural features and convergence among languages in a contact situation.

Scope

This topic covers externally induced change: lexical borrowing, the borrowing of phonological and grammatical features, structural convergence in contact situations, and the role of bilingualism. It also touches on outcomes such as pidgins, creoles, and mixed languages, and on the social conditions that shape what can be borrowed.

Core questions

• What kinds of features can be borrowed between languages, and under what conditions?
• How does the intensity of contact and degree of bilingualism affect borrowing?
• How is borrowing distinguished from inherited material in the comparative method?
• How does prolonged contact produce structural convergence and linguistic areas?
• How do pidgins, creoles, and mixed languages arise from contact?

Key theories

Borrowing scale and social predictors of contact change

Thomason and Kaufman argue that the social setting of contact, especially its intensity and the degree of bilingualism, predicts the kinds of features borrowed, with casual contact favoring vocabulary and intense contact permitting structural borrowing.

History

The systematic study of contact-induced change was advanced by Uriel Weinreich's Languages in Contact (1953) and given a comprehensive framework by Thomason and Kaufman in 1988, who linked contact outcomes to social factors. The field has since clarified the boundary between inherited and borrowed features, which is crucial to genetic classification.

Debates

Limits on structural borrowing

Whether any grammatical feature can in principle be borrowed given sufficiently intense contact, or whether some structures are resistant, remains debated; Thomason and Kaufman argue social factors override purely structural constraints.

Key figures

• Sarah Thomason
• Terrence Kaufman
• Uriel Weinreich

Seminal works

• thomasonKaufman1988
• thomason2001

Frequently asked questions

Why are loanwords a problem for the comparative method?

Borrowed words can resemble cognates and create spurious correspondences, so linguists must identify and set aside borrowings to avoid mistaking contact for genetic relationship.

Can grammar be borrowed, not just words?

Yes. In sufficiently intense contact, languages can borrow sounds, morphological patterns, and syntactic structures, though vocabulary is typically borrowed first and most easily.