Prefixes

Prefixes

We use prefixes to change meaning. They never change the part of speech. (Most suffixes change the part of speech.)

• Many prefixes give a word a meaning which is the opposite or negative of the original. For example, we can use the prefixes dis or un:

dis + appear - disappear

un + tie - untie

prefix	meaning / use	example
anti + adjective/noun	opposite	anti- clockwise/ anti-climax
anti + noun / adjective	against	anti-theft device / anti-European
co + noun / verb	together	cohabit

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