This is the 10707th most frequent Turkish word.
dalgın
Absent-minded.
In this sentence, 'dalgın' describes Mehmet's state of being distracted or not attentive. It pertains to his inability to concentrate.
Mehmet bugün çok dalgın, derslere odaklanamıyor.
Mehmet is very absent-minded today; he cannot focus on the lessons.
Here, 'dalgın' is used to describe the manner of walking, indicating a lack of focus or awareness.
Dalgın bir şekilde yürürken yanlış yola sapmış.
While walking absent-mindedly, he took the wrong turn.
In this instance, 'dalgın' characterizes the nature of the thoughts as being reflective or absent-minded.