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by Liana Mahoney
Topics: Fourth Grade, Reading
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Notes on Prefixes and Suffixes:

  • Some common prefixes: pre-, un-, re-, dis-, trans-, pro-, tele-, sub-, inter-, semi-, bi-, tri-, super-
  • Some common suffixes: -ed, -ing, -tion, -ly, -ment, -able, -ible, -ful, -or

Prefixes are word parts placed at the beginning of a word to change its meaning. For example, add the prefix “pre-” (meaning “before”) to the word “wash”, and you get “prewash", a word meaning "to be washed in advance".

A suffix goes at the end of a word to change its meaning or part of speech. If you add the suffix "-tion" to the adjective "determined", for instance, it becomes the noun "determination".

Prefixes and suffixes are good for breaking down big words and making the reading process easier.