Prefixes

A prefix is placed at the beginning of a word to modify or change its meaning. With Adjectives: They usually give adjectives a negative or an opposite meaning. For example: This chair is comfortable. ( adj) This chair is uncomfortable. ( adj)

If a root starts with: 1) m or p: in + mature =immature in +patient = impatient 2) r: in + replaceable = irreplaceable. 3) L: in+ legal =illegal

2) With verbs: -The prefixes un- and dis- can form the opposites of verbs. e.g. untie - disappear -The prefix re- can mean again or back. e.g. retype- rewind