discursive
Definition
Digressing from subject to subject; rambling. It can also mean proceeding step by step through logical arguments.
বাংলা বিষয় থেকে বিষয়ে ভ্রমণ করা; অস্পষ্ট বা বিস্তৃত
Example
"His essay was too discursive, veering from philosophy to music to politics without clear focus."