English and Language · Topic 68 of 125
Prefixes un- and re-
⭐ MasteredThe prefix un- means 'not', so unhappy means not happy. The prefix re- means 'again', so rewrite means to write again.
💡 Fun fact
Unlock and undo are words with the prefix un-, which often reverses an action.
All about Prefixes un- and re-
A prefix is a group of letters added to the start of a word to change its meaning. The prefix un- usually means not or the opposite, so unhappy means not happy.
Knowing prefixes helps you work out new words. If you know that dis- means not, you can guess that disagree is the opposite of agree.
🎮 Try it yourself!
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