Reading Prefixes and Suffixes Study Guide
Reading Prefixes and Suffixes
In this lesson, you'll discover how word parts can help you figure out word meaning.
SOME WORDS ARE made up of parts, like base words, roots, prefixes, and suffixes.
A base word is a real word that can stand alone. You can make new words from it by adding other word parts.
|Base word||Words made by adding parts|
|think||thinking, rethink, unthinkable, thinker|
|agree||agreeable, disagree, agreement|
A root can't stand alone. Many roots come from Greek or Latin words.
|dict||Latin for say||diction|
|spect||Greek for observe||inspect|
A prefix is a group of letters added to the beginning of a base word, like the re- in rethink. A prefix changes the meaning of the base word.
|sub||under||submarine, underwater vessel|
|un-||not||unbelieveable, not to be believed|
A suffix is a group of letters added to the end of a base word. The suffix also changes the meaning of the base word.
|-less||without||sleepless, clueless, hopeless|
|-ly||in that way||gladly, quickly, immediately|
You can use word parts to help you figure out the meaning of unknown words. Look at parts of the word. Do you recognize the base word? Be aware that added parts can change the base word's part of speech. For example, a verb might become a noun or a noun might become an adjective. Put the parts together and guess the meaning. Try out your idea in the sentence. If it makes sense, you're most likely right!
|I know he was upset, but his actions were indefensible!|
Put the parts together: not justifiable. Try it in the sentence: I know he was upset, but his actions were not justifiable! Does it make sense? Yes!
Practice exercises for this study guide can be found at:
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