The term Yevanic is an artificial creation from the Biblical word Yāwān referring to the Greeks and the lands that the Greeks inhabited. The term is an overextension of the Greek word Ἰωνία (Ionia in English) from the (then) easternmost Greeks to all Greeks.
The murder of many of the Romaniotes during the Holocaust;
The adoption of the majority languages through assimilation.
The Jews have a place of note in the history of Modern Greek. They were unaffected by Atticism and employed the current colloquial vernacular which they transcribed in Hebrew letters. The Romaniots were Jews settled in the Eastern Roman Empire long before its division from its Western counterpart, and they were linguistically assimilated long before leaving the Levant after Hadrian's decree against them and their religion. As a consequence, they spoke Greek, the language of the overwhelming majority of the populace in the beginning of the Byzantine era and that of the Greek élite thereafter, unti the fall of the Ottoman Empire. So there was no place for a Yevanitic language. If there was any attempt to write Greek in Hebrew characters, it was aborted, and never reached the community. Nor there was any reason for Ladino assimilation since the communities were either geographically apart or had different synagogues, and because their liturgies differed greatly. Rather, Ladino speakers were linguistically assimilated in Greek speaking areas and Ladino use dwindled to elderly jargon by the 50s[when?]. The term ‘Yavanitic Language’ is but a coined one.]
There is a small amount of literature in Yevanic dating from the early part of the modern period, the most extensive document being a translation of the Pentateuch. A polyglot edition of the Bible published in Constantinople in 1547 has the Hebrew text in the middle of the page, with a Ladino (Judaeo-Spanish) translation on one side and a Yevanic translation on the other. In its context, this exceptional cultivation of the vernacular has its analogue in the choice of Hellenistic Greek by the translators of the Septuagint and in the New Testament.