This is the 622nd most frequent Turkish word.
işi
The word "işi" means "his/her/its work" or "his/her/its job" in English.
The word "işi" here means "job" and refers to the profession or occupation of the person.
Onun işi çok ilginç.
Her job is very interesting.
"İşi" indicates "task" or a specific thing that needs to be done.
Bu işi başka bir zaman yapabiliriz.
We can do this task another time.
In this context, "işim" reflects personal responsibility or duty towards an action.