The study of Old Armenian (Grabar) idioms has got a comparatively short history, so there are some questions which have not been solved conclusively. One of them is the problem of the idioms not recorded in the dictionaries. The study of the vocabulary of “History of Armenia” by the 5th century historian Ghazar Parphetsi revealed 29 new idioms not included in either the phraseological or other dictionaries of the Old Armenian language.

KeywordsOld Armenian (Grabar) idioms dictionary of idioms vocabulary idioms not recorded in the dictionaries structural analysis morphological classification Ghazar Parpetsi “History of Armenia”.

The focus of the founder of the Mkhitarist Congregation, Mkhitar Sebastatsi (1676–1749) and his disciples was the Armenian language, and it was exactly in this field of study that they achieved unprecedented success. It is well known that both prominent Armenologists of the time and Sebastatsi himself were primarily interested in Grabar (Classical Armenian), whereas Ashkharhabar (Modern Armenian) remained largely outside the scope of their attention. Nevertheless, Sebastatsi authored the first grammar of the emerging Western Armenian language, in which he advocated for its purification and standardization, simultaneously calling for the elimination of Latinisms from Grabar.

Keywords Mkhitar Sebastatsi Mkhitarist Congregation Grabar Ashkharhabar dictionary lexicography Western Armenian grammar abbot Catholics.

Arsen Aytinian (1825–1902), a prominent representative of European Armenian studies, a theorist of linguistics and a practical researcher of the history of the Armenian language. He left an indelible mark on the advancement of Armenian studies in the field of linguistics and philology in general. The activity of the Vienna Mekhitarist Congregation in the second half of the 19th century is fully connected with his name. He was an authority in the field of Armenian language in the context of general and theoretical linguistics of his time - a field that has broadly illuminated the development of Armenian studies from the very beginning and to this day.

KeywordsArsen Aytinian armenology social nature of the language evolution. permanence synchronizm Old Armenian (Grabar) / New Armenian (Ashkharabar) literary language / dialects.