Prefix: UN-
Prefix: UN-

When you're writing something with a pencil and you make a mistake, what do you do? You erase it or UNDO it!
The word UNDO contains two different parts: UN+DO.
UN- is a prefix. It is a word or group of letters that hint at the meaning of a word.
The prefix UN- means "not" or "opposite of". So to UNDO something means to "not do" something or "the opposite of do".
If you make a mistake while writing, you can undo your mistake by using an eraser. However, undo is not the only word that contains the prefix UN-.
The practice questions and video below will show you more ways you can use the prefix UN-.
Required Video:
Related Worksheets:
Related Lessons: