Formal:
* ສະບາຍດີ (sabai di) - This is the most common and polite way to say goodbye, literally meaning "good health."
Informal:
* ໄປກ່ອນ (pai gon) - This means "go first" and is a more casual way to say goodbye.
* ລາກ່ອນ (la gon) - This means "leave first" and is another informal way to say goodbye.
* ເຫັນກັນ (hen gan) - This means "see you" and is a common way to say goodbye to friends.
You can also use phrases like ພົບກັນໃໝ່ (phob gan mai) ("see you again") or ຂໍອະນຸຍາດ (kho anuyat) ("excuse me") to say goodbye.
The best way to say goodbye in Laotian depends on the situation and your relationship with the person you are talking to.