Formal:
* ආයුබෝවන් (Ayubowan): This is the most common and formal greeting, meaning "may you live long."
* සුභ උදෑසනක් (Subha Udāsana): This means "good morning."
* සුභ දවසක් (Subha Davasak): This means "good day."
* සුභ සන්ධ්යාවක් (Subha Sandhyawak): This means "good evening."
Informal:
* හෙලෝ (Hello): This is borrowed from English and is widely used.
* ආයෙ (Aye): This is a more casual way to say "hi" and can be used with friends and family.
* කොහොමද (Kohomada): This means "how are you?" and is often used as a greeting, especially with close friends.
It's always good to start with the more formal greetings and then gauge the situation to see if it's appropriate to use a more informal greeting.