1. Root Words, Prefixes, Suffixes

2. What is a root word?
 Root words are real words that we use to build
other words by adding prefixes and suffixes
 Example:
 Like
 Dis-like
 Lik-ed

3. Prefixes
 Prefixes come at the beginning of the word
Prefix Meaning Examples
A-, An- Not, without Amoral, anesthetic
Com- With, together Communal,
community
Dis- Apart, not Disengage,
discomfort
Im- Not Imperfect, impolite
Micro- Small Microscope

4. Suffixes
 Suffixes come at the end of the word
Suffix Meaning Examples
-cide Kill(ing) Suicide, infanticide
-ism The belief in Communism,
terrorism
-ist One who believes Communist, pacifist
in
-logy Study field of Biology, cardiology
-phobia Exaggerated fear Claustrophobia,
agoraphobia

5. Practice!
 How many words do you know that use these
root words?
 Geo
 Grad
 Jud
 Like
 Count
 Photo
 auto