The notion of language dependency presupposes that there is a hierarchy of languages in a multilingual society, and that each language is assigned a functional role in a multilingual individual's restricted or extended spheres of linguistic interaction. In South Asia, language dependency has resulted in linguistic convergence of two types: (1) convergence within the inner language circle, that is, within South Asian languages; (2) outer linguistic imposition, or dependency on languages outside the South Asian language periphery. This type of convergence is seen in the Persianization and the Anglicization of the inner circle languages. This study is concerned with an aspect of the convergence with English, code-mixing, or the use of one or more languages for consistent transfer of linguistic units from one language into another, resulting in a new code of linguistic interaction. Code-mixing is role-dependent because the religious, social, economic, and regional characteristics of the participants are crucial in understanding the event. It is function-dependent because the specialized use to which a language is being put determines code-mixing. The study explores the formal manisfestations and motivations for code-mixing, the acceptability constraints on it, and its influence on South Asian languages. (CLK)