This is the 2520th most frequent Turkish word.
nedenlerden
"Of/from the reasons" or "because of the reasons".
The word 'nedenlerden' here means 'from reasons' or 'due to reasons,' and it is used to indicate a cause or justification for being busy.
Bugün toplantıya katılamayacağım, çünkü kişisel nedenlerden dolayı meşgulüm.
I won't be able to attend the meeting today because I am busy due to personal reasons.
In this sentence, 'nedenlerden' indicates multiple causes or reasons for the postponement.
Çeşitli nedenlerden dolayı projemizi ertelemek zorunda kaldık.
We had to postpone our project due to various reasons.
Here, 'nedenlerden' is used to refer to some unspecified or abstract reasons for possibly justifying his behavior.