"Deda" or "Djedo" are Serbian words for grandpa.
Serbian is a South-Western Slavic language. It belongs to the family of Indo-European languages. Serbian, like all Slavic languages, derives from the Old Church Slavic language. Its modern version is, in fact, based on the Stokavian dialect. Serbian is spoken by more than 12 million people, thus ranking around the 63rd position in the world. Serbian has two script standards, Latin and Cyrillic, both aiming to achieve maximum proximity between the written and spoken language.
Serbian is the official language of Serbia. Due to its close relationship with other languages in the region and the former standard language of Serbo-Croatian, Serbian is also official in Montenegro, Bosnia and Herzegovina, and at a regional level in Macedonia. Serbian is also spoken by Serbian ethnic minorities in neighbouring countries, emigrants' communities and in the former republics of Federal Yugoslavia.
Learn more about Serbian language, alphabet and pronunciation at Omniglot.