<![CDATA[This study aims to identify the forms and types of Indonesian–Sundanese code switching and code mixing and to explain the factors influencing their occurrence in @inimamutt_’s TikTok videos. This study employed a descriptive qualitative method. The data were collected using listening and note-taking techniques from the five latest TikTok videos uploaded to the @inimamutt_ account in November 2025. The analysis identified 33 utterances containing code switching and code mixing, comprising 14 and 19 instances of code switching and 19 instances of code mixing. All code-switching instances were categorized as internal code-switching, involving shifts between Indonesian and Sundanese, while all code-mixing instances were categorized as inner code-mixing, involving the insertion of Sundanese elements into Indonesian utterances. The findings indicate that code mixing occurred more frequently than code switching and was predominantly used to create social closeness, humor, expressive variation, and local identity in informal interactions. Meanwhile, code switching was used as a contextual communication strategy to adjust to interlocutors and clarify meanings. These findings demonstrate that Indonesian–Sundanese code switching and code mixing in TikTok videos are dynamic sociolinguistic practices that reflect bilingual language use, social relationships, local identity, and adaptation to digital communication contexts.]]>
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