This review article explores the impact of foreign language teaching on the lexicons of local languages. It synthesizes theoretical perspectives and empirical evidence to examine vocabulary enrichment, semantic shifts, grammatical changes, and sociocultural implications. While foreign language instruction can lead to linguistic borrowing and cultural exchange, it also poses challenges such as linguistic erosion and cultural hegemony. Strategies for balancing linguistic diversity and cultural sustainability are discussed, highlighting the importance of inclusive language policies and innovative pedagogical approaches.

language teaching, lexicology, cultural exchange, linguistic diversity, language policy, sociocultural implications, innovative pedagogy.

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