Özet:

Verb derivational affixes from the verb, which are the subject of our study, -çIr- and -şIr- were generally considered as variants of each other in previous studies. The opinion that these two suffixes are the same is common in present studies, but it is difficult to say that there is a consensus on the structure and function of these suffixes. The suffix -şIr- is a combination of -(I)ş- and -(I)r-. The addition of -şIr-, tap- “find”, yap- “covering” and teg- “touching” verbs have been used from the Old Uighur Turkish period to the present dialects. In this form, it has a function that includes both co-operative function and causativisation. The suffix -çIr- is a combination of -çI- and -(I)r-. The first use of the -çIr- suffix was found in the form of külçir- “smile” in Old Uighur Turkish. This usage continued until the period of Chagatai Turkish. During the Karahanlı Turkish period, it was used as a tamçır- “drip”. It can be said that the suffix -çIr- derives a meaning close to the root of the verb, as in the case of kül- “laugh” > külçir- “smiling”. The suffix -çI- that we think constitutes the first part of the suffix -çIr- and which is generally considered as a reduplication suffix, is also seen in some contemporary Turkish dialects in this form or in the form of -şI-.

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