Can you use a prefix to determine the meaning of real?

You can't use a prefix to directly determine the meaning of "real" because "real" is already a complete word. It doesn't have a prefix.

However, you can use prefixes to create new words with related meanings:

* Surreal: This word uses the prefix "sur-" meaning "above" or "beyond." It means "having the qualities of a dream; bizarre."

* Unreal: This word uses the prefix "un-" meaning "not." It means "not real; imaginary."

While these words are related to "real," their meanings are distinct and involve prefixes.