What is a prefix for write?

There isn't one specific prefix that directly means "write" in English. However, there are many prefixes that can be used with "write" to create new words with different meanings.

Here are a few examples:

* Re-write: To write something again, often with changes.

* Over-write: To write over something that already exists, erasing it.

* Under-write: To guarantee financial support for a project.

* Out-write: To write better or more than someone else.

* Mis-write: To write something incorrectly.

Do you have a specific meaning in mind for your word? If you provide more context, I can help you find the most suitable prefix.