This is the 12879th most frequent Turkish word.
iştir
"It is" or "it is (that)" - third-person singular subject pronoun + verb in Turkish.
Here, 'iştir' is a noun indicating something that is a task or assignment, used with a possessive suffix.
Bu toplantı herkes için önemli bir iştir.
This meeting is an important affair for everyone.
In this sentence, 'iştir' refers to an endeavor or process when related to an abstract concept.
Bilginin paylaşılması toplumun gelişmesi için bir iştir.
Sharing knowledge is a matter for the development of society.
'İştir' here highlights that success is a concrete effort or goal.