Un Dis and Non as Prefixes worksheet - Free Printable

Let's solve this worksheet step by step.

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Understanding the Task

The worksheet focuses on prefixes: *dis-*, *non-*, and *un-*, all of which mean "not" or "the opposite of."

We are to:
1. Add one of these prefixes to base words to form new words.
2. Use those new words to complete sentences.

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## Part A: Add the correct prefix (dis-, non-, un-) to each base word

We'll go through each word and choose the most appropriate prefix based on meaning and common usage.

1. zip → unzip
*(To open a zipper; "un-" means to reverse the action)*

2. honest → dishonest
*(Not honest; "dis-" is commonly used with "honest")*

3. fat → nonfat
*(No fat; "non-" is used for absence, especially in food terms)*

4. agree → disagree
*(Opposite of agree; "dis-" is standard here)*

5. ripe → unripe
*(Not ripe; "un-" is natural here)*

6. pleasant → unpleasant
*(Not pleasant; "un-" is standard)*

7. stop → disstop? ✘ Not a word.
→ nonstop ✔
*(Continuous; "non-" means without stopping)*

8. respect → disrespect
*(Lack of respect; "dis-" is used here)*

9. fair → unfair
*(Not fair; "un-" is correct)*

10. obey → disobey
*(Not obey; "dis-" is standard)*

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✔ Answers for Part A:

1. unzip
2. dishonest
3. nonfat
4. disagree
5. unripe
6. unpleasant
7. nonstop
8. disrespect
9. unfair
10. disobey

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## Part B: Use the words from Part A to complete the sentences

Now, use the words above to fill in the blanks.

1. Haley knew it was dishonest to copy her sister's homework.
→ Copying is wrong = not honest → dishonest

2. Luke could not unzip his jacket.
→ He couldn’t open it → unzip

3. Claire ate some nonfat yogurt before going for a run.
→ Yogurt with no fat → nonfat

4. Gloria did not tolerate disrespect from anyone.
→ She wouldn't accept lack of respect → disrespect

5. Phil worked nonstop on his project.
→ Without stopping → nonstop

6. Cameron and Mitchell disagree about everything.
→ They don’t agree → disagree

7. Jay had an unpleasant time at the party.
→ Not enjoyable → unpleasant

8. Manny would never disobey his mother.
→ Never fail to obey → disobey

9. Lily ate the banana even though it was still unripe.
→ Not ripe yet → unripe

10. Alex felt her teacher was being unfair.
→ Not fair → unfair

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✔ Final Answers for Part B:

1. dishonest
2. unzip
3. nonfat
4. disrespect
5. nonstop
6. disagree
7. unpleasant
8. disobey
9. unripe
10. unfair

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📝 Summary:

This worksheet teaches how prefixes like *dis-*, *non-*, and *un-* change the meaning of words to indicate negation or opposition. The key is choosing the right prefix based on common usage and meaning.

✔ All answers are now filled in correctly!

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