Penelitian ini bertujuan untuk mendeskripsikan bentuk interferensi fonologi bahasa Sunda dalam penggunaan bahasa Indonesia pada ceramah Ustazah Dedeh di acara Mamah dan Aa Beraksi. Penelitian ini merupakan penelitian deskriptif kualitatif. Data dalam penelitian ini adalah ujaran ceramah Ustazah Dedeh di acara Mamah dan Aa Beraksi. Sumber data dalam penelitian ini adalah Ustazah Dedeh di acara Mamah dan Aa Beraksi. Teknik pengumpulan data yang dilakukan dalam penelitian ini menggunakan metode simak yang terdapat teknik lanjutan, yaitu teknik simak bebas libat cakap (SBLC), teknik rekam, dan teknik catat. Teknik analisis data dengan menggunakan tiga tahap, yaitu (1) reduksi data, (2) penyajian data, dan (3) penarikan simpulan. Keabsahan data diperoleh menggunakan triangulasi sumber. Hasil penelitian ini menunjukkan bahwa yang diujarkan oleh Ustazah Dedeh mengalami interferensi fonologi bahasa Sunda dalam penggunaan bahasa Indonesia pada ceramah Ustazah Dedeh di acara Mamah dan Aa Beraksi. Bentuk interferensi fonologi yang terjadi meliputi pengubahan fonem, penambahan fonem, dan penghilangan fonem. Bentuk interferensi fonologi pengubahan fonem meliputi fonem /i/ dilafalkan /y/, fonem /a/ dilafalkan /?/, fonem /a/ dilafalkan /o/, fonem /a/ dilafalkan /?/, fonem /au/ dilafalkan /o/, fonem /o/ dilafalkan /?/, fonem /f/ dilafalkan /p/, fonem /m/ dilafalkan /?/, fonem /?/ dilafalkan /a/, fonem /o/ dilafalkan /u/, fonem /i/ dilafalkan /è/, fonem /z/ dilafalkan /j/, fonem /g/ dilafalkan /j/, fonem /u/ dilafalkan /aw/, fonem /k/ dilafalkan /g/, fonem /ai/ dilafalkan /è/, fonem /z/ dilafalkan /d/, fonem /c/ dilafalkan /ñ/, fonem /u/ dilafalkan /ro/, fonem /t/ dilafalkan /d/, fonem /v/ dilafalkan /p/, dan fonem /meng-/ dilafalkan /nge-/. Bentuk interferensi fonologi penambahan fonem meliputi penambahan fonem /i/, penambahan fonem /h/, penambahan fonem /?/, penambahan fonem /?/, penambahan fonem /r/, dan penambahan fonem /?/. Bentuk interferensi fonologi penghilangan fonem meliputi penghilangan fonem /k/, penghilangan fonem /y/, penghilangan fonem /h/, dan penghilangan fonem /d/. Kata Kunci: Interferensi fonologi, Bahasa Sunda, Ceramah.

This study has an objective to describe the forms of phonological interference of Sundanese in Indonesian language usage at Ustazah Dedeh lecture in “Mamah dan Aa Beraksi” show. This study was a qualitative descriptive research. The data in this study were the utterances of Ustazah Dedeh lecture in Mamah dan Aa Beraksi show. The source of data in this study was Ustazah Dedeh in Mamah dan Aa Beraksi show. Technique of collecting data done in this study was observation method that there were advanced techniques, they are uninvolved conversation observation technique, recording technique, and writing technique. Technique of data analysis used three stages those are (1) data reduction, (2) data display, and (3) drawing conclusion. The validity of the data was obtained by using source triangulation. The results of the study show that the utterances uttered by Ustazah Dedeh experience a phonological interference of Sundanese in Indonesian language usage at Ustazah Dedeh lecture in “Mamah dan Aa Beraksi” show. The phonological interference occurs include the phoneme conversion, phoneme addition, and phoneme omission. The phonological interference forms of phoneme conversion include the phoneme /i/ pronounced /y/, phoneme /a/ pronounced /?/, phoneme /a/ pronounced /o/, phoneme /a/ pronounced /?/, phoneme /au/ pronounced /o/, phoneme /o/ pronounced /?/, phoneme /f/ pronounced /p/, phoneme /m/ pronounced /?/, phoneme /?/ pronounced /a/, phoneme /o/ pronounced /u/, phoneme /i/ pronounced /è/, phoneme /z/ pronounced /j/, phoneme /g/ pronounced /j/, phoneme /u/ pronounced /aw, phoneme /k/ pronounced /g/, phoneme /ai/ pronounced /è/, phoneme /z/ pronounced /d/, phoneme /c/ pronounced /ñ/, phoneme /u/ pronounced /ro/, phoneme /t/ pronounced /d/, phoneme /v/ pronounced /p/, and phoneme /meng-/ pronounced /nge-/. The phonological interference forms of phoneme addition include the addition of phoneme /i/, the addition of phoneme /h/, the addition of phoneme /?/, the addition of phoneme /?/, the addition of phoneme /r/, and the addition of phoneme /?/. The phonological interference forms of phoneme omission include the omission of phoneme /k/, the omission of phoneme /y/, the omission of phoneme /h/, and the omission of phoneme /d/. Keywords: Phonological Interference, Sundanese, Lecture.

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