A prefix is a letter or group of letters added to the beginning of a word. Knowing what a prefix means can help us to understand new words.
If we add the prefix un- to a word, it usually gives it the opposite meaning.
happy / unhappy
If we add the prefix re- to a word, it usually means that the action is being done again.
paint / repaint
If we add the prefix mis- to a word, it usually means that something is being done wrongly.
behave / misbehave
In this activity, you can practise adding prefixes to words to make new words.
You can also check your words using a dictionary.