Prefixes are words that you place in front of other words to change their meanings. When you add the prefix Un- to the beginning of words, it gives you the opposite meaning of some words. For example, words like, Un-true, Un-happy, Un-finish. In this tracing sheet, you can help your child understand more about words and their Un- opposites. Draw a line to the correct picture that shows the meaning of each word in this worksheet.