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Reconstruction of Passive suffix in middle Persian Languages

It has been claimed That in middle Persian Languages, one way of passivization was adding suffix - ih to the present stem of the Verb. Contrary to this claim, It is proved in this article that the passive suffix was - i which historically originated from -ya - the passive morpheme in ancient Iranian Language. As we know, all the Verbal endings in middle Languages begin with the Vowel [e] as in - em , eh , ʹEd , Ern, Ed, end , so - h - has been a hiatus needed to be inserted between the two Vowels (The Vowel of the passive suffix and the initial Vowel in the Verbal endings ). Then , the morpheme - i - and the hiatus -h - have merged into one merpheme - ih.