This is the 2933rd most frequent Turkish word.
sadettin
"Sadettin" is a Turkish male given name meaning "happiness of religion" or "joy of faith."
In this sentence, 'Sadettin' is used as a proper noun, referring to a person's name in a respectful context.
Sadettin bey sabah erkenden işe gitmek için evden çıktı.
Mr. Sadettin left home early in the morning to go to work.
Here, 'Sadettin' is used to denote ownership of a specific person’s poems, and the suffix '-in' indicates possession.
Arkadaşlar arasında Sadettin'in şiirleri çok beğeniliyor.
Sadettin's poems are admired among friends.
In this case, 'Sadettin' metaphorically represents the characteristics of a person who is presumably helpful, illustrating a metaphorical usage of the name.