Adjective Suffixes Worksheets and Exercises (PDF)

These adjective suffixes worksheets are designed to help learners identify common adjective suffixes, understand their meanings, and practice turning base words into descriptive adjectives. Through a variety of matching activities, sentence-based exercises, and word formation tasks, learners can improve both vocabulary knowledge and spelling accuracy while using adjectives naturally in context.

Learning how to form adjectives using suffixes is an effective way to expand vocabulary and improve sentence writing. Common adjective suffixes such as -ful, -less, -ous, -able, -y, -ic, -ive, and -al help describe nouns more clearly and add detail to written and spoken English.

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Adjective Suffixes Exercises

Exercise 1: Match the Word to Its Adjective Form

Match each base word with its correct adjective form.

1. care                    
2. danger               
3. use  
4. luck 
5. forget 

•  a. lucky
• b. forgetful
• c. dangerous
• d. useful
• e. careful

Answer Key

1. care → e. careful
2. danger → c. dangerous
3. use → d. useful
4. luck → a. lucky
5. forget → b. forgetful

Exercise 2: Choose the Correct Adjective Suffix

Add the correct suffix to form an adjective.
Choose from -ful, -less, -ous, -al, -y, -ive, -ic, -able.

1. beauty → __________
2. help → __________
3. danger → __________
4. create → __________
5. mess → __________
6. poet → __________
7. act → __________
8. fear → __________

Answer Key

1. beauty → beautiful
2. help → helpful
3. danger → dangerous
4. create → creative
5. mess → messy
6. poet → poetic
7. act → active
8. fear → fearful

Exercise 3: Fill in the Blanks with the Correct Adjective

Use the word in parentheses and add the correct suffix to complete each sentence.

1. She is always very __________. (care)
2. That story was really __________. (humor)
3. This task is not __________ at all. (enjoy)
4. The baby is so __________ when she sleeps. (peace)
5. I had a very __________ day at work. (stress)

Answer Key

1. careful
2. humorous
3. enjoyable
4. peaceful
5. stressful

Exercise 4: Identify the Suffix and Base Word

Underline the suffix and write the original base word.
Remember: restore the base word to its original spelling if letters change.

1. comfortable
2. hopeful
3. historic
4. forgetful
5. childish

Answer Key

1. comfortable → Suffix: -able, Base: comfort
2. hopeful → Suffix: -ful, Base: hope
3. historic → Suffix: -ic, Base: history (y->i)
4. forgetful → Suffix: -ful, Base: forget
5. childish → Suffix: -ish, Base: child

Exercise 5: Choose the Correct Adjective from the Options

Choose the correct adjective that best fits each sentence.

1. The view from the mountain is absolutely __________.
   a) beauty   b) beautiful   c) beautify
2. He gave a very __________ answer to the question.
   a) logic   b) logical   c) logicy
3. The soup tastes __________ without any salt.
   a) tasteful   b) tasteless   c) tasting
4. She wore a __________ dress to the party.
   a) color   b) colorful   c) coloring
5. We had a very __________ weekend at the beach.
   a) sun   b) sunny   c) sunning

Answer Key

1. beautiful
2. logical
3. tasteless
4. colorful
5. sunny

Exercise 6: Form Adjectives Using the Correct Suffix

Form an adjective from each base word.
Pay attention to spelling rules such as dropping -e or changing -y to -i.

1. forget → __________
2. help → __________
3. wonder → __________
4. danger → __________
5. fame → __________
6. child → __________
7. create → __________
8. peace → __________
9. noise → __________
10. emotion → __________

Answer Key

1. forgetful
2. helpless/helpful
3. wonderful
4. dangerous
5. famous
6. childish
7. creative
8. peaceful
9. noisy
10. emotional