How do you say good bye in bengali?

There are a few ways to say goodbye in Bengali, depending on the context and level of formality:

Formal:

* বিদায় (bidaẏ) - This is the most formal way to say goodbye.

* আপনার সঙ্গে দেখা হবে (aponar shonge dekha hobe) - This translates to "I will see you again."

Informal:

* শুভেচ্ছা (shubhechcha) - This is a more general farewell, like "Best wishes."

* ভালো থাকবেন (valo thaaben) - This means "Take care."

* তোমার সঙ্গে দেখা হবে (tomar shonge dekha hobe) - This is the informal version of "I will see you again."

More informal:

* আল্লাহ হাফেজ (allah haafez) - This is a common farewell among Muslims.

* চলো (chalo) - This literally means "Let's go," but can be used as a casual goodbye.

The best choice will depend on who you're talking to and the situation.