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Word families and word parts

Beginnings (prefixes) that change the form of words

  • A prefix is a group of letters that you add to the beginning of a root word. 
  • It does not indicate the class of the word, but can add to its meaning:

post- = after: posthumous = after death; post-graduate = after graduating

co- = with, together: co-worker = a person who works with you

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