This research aims to determine the reflection of “neden sonra”, which is a concept mark, in Mustafa KUTLU’s works. Within the framework of this purpose, starting from Kutlu’s first storybook (Ortadaki Adam) published in 1970; A total of 45 books, including 1 children’s book, 12 essays, 3 travel books, 28 stories, and 1 biographical interview, were examined and the “neden sonra” was traced. Sentences with “neden sonra” in them were determined and the meaning/s in which the concept sign was used in the context was determined. Document analysis, one of the qualitative research methods, was used in the research.

As a result of the study, “neden sonra” in Mustafa KUTLU’s works; 2 in 1 children’s book, 18 in 8 essays, 3 in 2 travel books, 75 in 25 storybooks; it has been determined that it is mentioned 98 times in 37 books.

It has been determined that 86 of the “neden sonra” concept marks in the books are used with the first meaning of the item in the Turkish Dictionary (2011) and 12 with the second meaning.

Mustafa KUTLU, concept mark, neden sonra, adverb