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How did Arabic replace Coptic as a commonly spoken language in Egypt?

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Three women sit together outdoors, smiling and laughing as they talk, with trees softly blurred in the background. — Language Spoken language is just one type of language, which has been defined in many different ways across history.

The transition from Coptic to Arabic as the primary spoken language in Egypt was a slow, gradual process following the 7th-century Islamic conquest.12

Initially, the Arab conquerors maintained a policy of isolation from the native population, and there was no immediate pressure to adopt their language or religion. However, the establishment of garrison towns, such as Al-Fustat, served as a primary engine for Arabization, as these centers required native inhabitants to possess knowledge of Arabic for administrative and commercial interaction.2

Over time, adopting the Arabic language and culture became a significant vehicle for upward mobility, as Copts frequently held key administrative and commercial roles under Arab rule. By the 12th century, Arabic had come into common use even among the Coptic Christian community. Consequently, Coptic ceased to be a daily vernacular and was relegated to a liturgical role within the Coptic Orthodox Church, where it continues to be used alongside Arabic in religious services today.31