How do you say hello in Pali?

There isn't a direct equivalent of "hello" in Pali, as the language doesn't have a specific greeting for casual encounters like English does.

However, depending on the context, you could use:

Formal:

* Āyubhāvatu (आयुभवातु): "May you be well" - This is a respectful greeting used in formal settings.

* Sadhu (सधु): "Well done" - This is often used to greet someone after an accomplishment or good deed.

Informal:

* Subhāsati (सुभासति): "May you be well" - This is a more casual greeting, suitable for friends or acquaintances.

* Aham bhava (अहं भवा): "I am well" - This can be used as a greeting, similar to "how are you?" in English.

The most common way to greet someone in Pali would be to use the appropriate form of the word "bhavan (भवन)" (meaning "you") followed by a verb or phrase expressing good wishes.

For example:

* Bhavan āyubhāvatu (भवन आयुभवातु): "May you be well"

* Bhavan subhāsati (भवन सुभासति): "May you be well"

Ultimately, the best greeting to use depends on the situation and the person you are greeting.