Judaeo-Portuguese, Jewish-Portuguese or Judaeo-Lusitanic, is an extinct Jewish language or a dialect of Galician-Portuguese written in the Hebrew alphabet that was used by the Jews of Portugal. ^[1]

It was the vernacular of Sephardi Jews in Portugal before the 16th century and also in many places of the Portuguese Jewish diaspora. Its texts were written in the Hebrew script ( aljamiado português) or the Latin alphabet. ^[2]

As Portuguese Jews intermarried with other expelled Sephardim, the language influenced the nearby Judeo-Spanish. Close similarity to Standard Portuguese made Judeo-Portuguese go extinct in Portugal, ^[1] having survived in everyday usage in the diaspora until the late 18th/early 19th century.^{[ citation needed]} Judeo-Portuguese influenced the Papiamento and Saramaccan languages.^{[ citation needed]}

The earliest known text containing Judeo-Portuguese text is a manuscript from 1262 about illuminating manuscripts called O livro de como se fazem as cores. ^{[3][ self-published source]} After the Jewish exodus from Portugal in 1497 many Portuguese Jews would flee to the Dutch Republic and Judeo-Portuguese would intake a lot of Dutch influence. ^[4] This same exodus would cause the language to spread to the Turkish Jewish community. ^[4] It would go extinct in the early 19th century, though since then has only been used liturgically. ^{[3][ self-published source]}

The oldest text containing Judeo-Portuguese is a manuscript from 1262 about illuminating manuscripts called O livro de como se fazem as cores. ^[3]During the 15th century several texts including one about medical astrology and a prayer book. ^[4] Even until today is it still used liturgically but only by a very small number of people. ^[3]

The decline of Judeo-Portuguese would begin with the introduction of public schooling. Eventually declining to home use before finally only being used liturgically. ^[4]

There existed several dialects of Judeo-Portuguese divided into 2 categories referred to as Peninsular Judeo-Portuguese and Emigre Judeo-Portuguese, though the differences between them are unclear. ^[4]

Judeo-Portuguese has influenced several languages. These include Balkan dialects of Ladino, and Portuguese. ^[5]

• History of the Jews in Portugal
• Spanish and Portuguese Jews
• Lusophone
• Lusitanic
• Pallache family
• Judeo-Spanish

• Judaeo-Portuguese in Jewish Language Research Center
• Thesouro dos Dinim, a halakhic work (annotated transcription) Archived 2011-09-27 at the Wayback Machine
• Thesouro dos Dinim, a halakhic work (partial facsimile)
• Menasseh Ben Israel de la fragilidad humana y inclinacion del hombre al peccado. Parte primera
• Strolovitch, Devon L. (2005) Old Portuguese in Hebrew Script: Convention, Contact, and Convivência. Ph.D. dissertation, Cornell University, Ithaca, NY.

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