Name: ___________________________________ Date:___________________________
De- Prefix Worksheet
The prefix De- means opposite.
Example: Defrost means to not be frozen.
Sentence: I defrosted the frozen meat.
Directions: Write the definition of the prefixed word in the box given.
Part 1
Prefix Word
Defrost
Decline
Deactivate
Decaffeinated
Depress
Decode
Decrease
Deforest
Detour
Dehydrate
Definition
Not be frozen
Directions: Write a sentence using the prefixed word.
Part 2
1. Defrost
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2. Decline
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3. Deactivate
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4. Decaffeinated
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5. Depress
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6. Decode
_____________________________________________________________________________
©Mary Thomas M.S. CCC-SLP
7. Decrease
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8. Deforest
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9. Detour
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10. Dehydrate
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©Mary Thomas M.S. CCC-SLP