What is the opposite of Greek?

There isn't a single word that is the direct opposite of "Greek". It depends on what aspect of "Greek" you're thinking about. Here are some possibilities:

* Language: If you're thinking about the Greek language, the opposite could be any other language (e.g., English, Spanish, Mandarin).

* Culture: If you're thinking about Greek culture, the opposite could be a culture with radically different values and traditions, like perhaps Viking culture.

* Nationality: If you're thinking about Greek nationality, the opposite could be any other nationality (e.g., American, Japanese, Nigerian).

* Mythology: If you're thinking about Greek mythology, the opposite could be any other mythology (e.g., Norse mythology, Egyptian mythology).

It's important to clarify what you mean by "opposite" to give a more precise answer.