How do you say hey in greek?

There isn't one single perfect equivalent of "Hey" in Greek, as the best translation depends on the context and your relationship with the person you're addressing. Here are a few options:

* Γεια (Gia): This is a common and versatile greeting, similar to "hi" or "hello." It's generally safe to use in most situations.

* Γεια σου (Gia sou): This is a more informal version of "Γεια," meaning "hello" or "hi" and is suitable for friends and people you know well. It literally translates to "your health."

* Χαίρετε (Chairete): This is a more formal greeting, suitable for addressing multiple people or someone you don't know well. It's a more polite and respectful form.

* Καλημέρα (Kalimera): This means "good morning."

* Καλησπέρα (Kalispera): This means "good evening" or "good afternoon."

So, depending on the time of day and your relationship with the person, you could use any of these. For a casual "hey" to a friend, Γεια σου (Gia sou) is probably your best bet.