EKLEŞEN BİR SON ÇEKİM EDATI: TAPA>+DIVA/ +DUVA

When Turkish is classified according to its structure, it is in the group of agglutinative languages. In Turkish, suffixes are generally divided into two as inflectional suffixes and constructive suffixes. All suffixes in all agglutinative languages and in the Turkish language have a function, a duty. Researching the semantics, function, etymology and phonology of these suffixes is very important because it means examining and understanding the entire Turkish language. The main purpose of our research is to present the form, usage, sound events, and examples of the preposition tapa “-e doğru” in historical and contemporary texts, which turned into an affix for various reasons over time, while it was an independent word before. It has been tried to answer the question in which dialects the preposition "tapa" is added and continues to be used as a preposition in which dialects. In the study, firstly, the etymology of the preposition "tapa" was given. Then, the forms and usage examples of the prepositions in historical dialects are mentioned. After the historical dialects, it has been tried to show with examples in which contemporary dialects and in which form the preposition tapa lives. In the study, it was concluded that the preposition tapa is used in contemporary dialects other than Western Turkish and it is added as +diva/ +dive/, +tiva/ +tive/, +duva/ +duve/, +tuva, +tuve in Tuvan Turkish.