Old Turkish gur-guz- suffix and on their use in the Ḳısasü’l Enbiyā

In this study, the frequency of use, status, phonological changes and equivalences between suffixes of the verbs formed with the gUr-/gUz- causative suffix in Ḳıṣaṣü'l Enbiyâ written in Khwarezm Turkic was examined. The usage patterns, morphological and semantic differences of these words in the historical periods of the Turkic language were determined, and the grammaticalization process of the suffix was tried to be understood by examining the forms in the other Turkic dialects. The reasons why gUr-/gUz-, which is not a live suffix today, fell out of use, its Oghuz effect on it, and the effect of r/z equivalence, which is the most basic phonetic criterion of Altaic Language Theory, on suffix were examined.