worksheets library | Suffixes Worksheets - Free Printable

Suffix –ful Worksheet – Solved and Explained

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Instructions Recap:
Underline the word with the suffix "-ful" in each sentence. Then, write the base word (the word before "-ful") on the line provided.

The suffix -ful means "full of."
For example: *help + ful = helpful* → base word is help.

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Let’s go through each sentence one by one:

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1. That food was harmful to my health.
- Word with "-ful": harmful
- Base word: harm
✔ Answer: Underline *harmful*, write harm

2. We had a peaceful gathering.
- Word with "-ful": peaceful
- Base word: peace
✔ Answer: Underline *peaceful*, write peace

3. That was a pitiful excuse.
- Word with "-ful": pitiful
- Base word: pity
✔ Answer: Underline *pitiful*, write pity

4. We had a successful meeting.
- Word with "-ful": successful
- Base word: success
✔ Answer: Underline *successful*, write success

5. That was a thoughtful comment.
- Word with "-ful": thoughtful
- Base word: thought
✔ Answer: Underline *thoughtful*, write thought

6. He made a powerful statement.
- Word with "-ful": powerful
- Base word: power
✔ Answer: Underline *powerful*, write power

7. That was a truthful story.
- Word with "-ful": truthful
- Base word: truth
✔ Answer: Underline *truthful*, write truth

8. What a wonderful day!
- Word with "-ful": wonderful
- Base word: wonder
✔ Answer: Underline *wonderful*, write wonder

9. The graceful ballerina danced on stage.
- Word with "-ful": graceful
- Base word: grace
✔ Answer: Underline *graceful*, write grace

10. I had a dreadful cough.
- Word with "-ful": dreadful
- Base word: dread
✔ Answer: Underline *dreadful*, write dread

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✔ Final Answers:

1. harmful — harm
2. peaceful — peace
3. pitiful — pity
4. successful — success
5. thoughtful — thought
6. powerful — power
7. truthful — truth
8. wonderful — wonder
9. graceful — grace
10. dreadful — dread

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🔍 Explanation:

- The suffix -ful always comes at the end of a word.
- It means "full of," so when you see a word ending in -ful, think: *"Full of what?"*
- Example: *helpful* = full of help
- *peaceful* = full of peace
- To find the base word, simply remove the -ful ending.
- This helps students understand how new words are formed using suffixes.

This worksheet reinforces vocabulary building and understanding of word structure—key skills in language development.

Let me know if you'd like this turned into a printable answer key or need it adapted for younger learners!