What are prefixes for do?

There aren't any prefixes specifically for "do" in English. However, there are some prefixes that can be combined with other words to create new verbs that express the idea of "doing" something. For example:

* Re-: This prefix means "again" or "back", so "redo" means to do something again.

* Un-: This prefix means "not" or "the opposite of", so "undo" means to reverse an action.

* Over-: This prefix means "too much" or "excessively", so "overdo" means to do something too much.

* Under-: This prefix means "not enough" or "insufficiently", so "underdo" means to do something insufficiently.

While these prefixes don't attach directly to "do," they can be used to create words that express the act of doing something in a particular way.