1. How can knowing word parts help you determine the meaning of unfamiliar words?
Example: Prefix, suffix, root words.
Un success ful

2. Prefixes, Suffixes, and Base Words
Learn how to use prefixes, suffixes, and base words to find the meanings of words.

3. Base Words A base word is a word in its simplest form. A
base word has nothing added to it.
Examples: Do
Heat
Write
Read
Pack

4. Base Words
Write the base words.
Played
Running
Reheat
Quickly
Unhappy

5. Prefixes
Prefixes are added to the beginning of a base word. They change the meaning of the base word. Un + happy = unhappy Re + do = redo

6. Prefixes The prefix re means again. Reread means to read again.
Rewrite means to write again.
What does reheat mean?
The prefix un means not or the opposite of.
Uncomfortable means not comfortable.
Unpack means the opposite of pack.
What does unclear mean?

7. IMPORTANT TERMS TO KNOW
The Prefix Pre means
The Prefix Non means
The Prefix Mis means
The prefix Con means
The Prefix Sub means
The Prefix Post means
The Prefix Trans means
BEFORE
Not
Wrong or Bad
With or Together
Below
After
Across

8. ____do ____happy ____clear ____read ____pack The opposite of pack
Prefixes Add a prefix to the beginning of each word to make a new word. Draw a line form the word to its meaning.
____do
____happy
____clear
____read
____pack
The opposite of pack
Do again
Opposite of clear
Read again
Not happy

9. Opposite Prefixes
Pre (before)
Over in
Post
Under Ex
When using any of the above prefixes, no change is necessary to the base word.

10. Suffixes
Suffixes are added to the end of a base word. They change the meaning of the base word.
wonder + ful = wonderful
rest + ful = restful

11. Suffixes The suffix ful means full of. Colorful means full of color.
Playful means full of play.
What does thankful mean?
The suffix ly means in a certain way.
Quickly means in a quick way.
Loudly means in a loud way.
What does suddenly mean?

12. Suffixes Add a suffix to the end of each base word
Suffixes Add a suffix to the end of each base word. Draw a line to its new meaning.
Loud____
Color____
Wonder____
Sudden_____
Play____
In a loud way
Full of play
Full of wonder
In a sudden way
Full of color

13. Match each word with its definition.
healthful
in a sad way
slowly
to heat again
the opposite of lock
unlock
to read again
reheat
full of health
sadly
in a slow way
uncomfortable
not comfortable
reread