This is the 8353rd most frequent Swedish word.
avslutad
Completed.
Here, 'avslutad' is used as an adjective describing the state of the project, indicating it is finished.
Projektet är avslutat och alla är nöjda med resultatet.
The project is completed and everyone is satisfied with the result.
In this case, 'avslutad' is used as an adjective modifying 'konversation', specifying the conversation has been completed.
Efter en avslutad konversation kände hon en lättnad.
After a finished conversation, she felt relief.
'Avslutad' acts as an adjective describing the state of 'boken', denoting that the book is finished.