This is the 5867th most frequent Turkish word.
tamamlanmış
"Completed" or "finished."
Here, 'tamamlanmış' is used as a past participle to describe the state of the project.
Proje tamamlanmış ve sunuma hazırdı.
The project was completed and ready for presentation.
In this sentence, 'tamamlanmış' functions as an adjective modifying 'plans' to indicate that they are finished.
Tamamlanmış planlar üzerinde çalışıyorlardı.
They were working on the completed plans.
'Tamamlanmış' is used as part of an abstract noun concept 'tamamlanmışlık' to express a state of being completed.