Class 6 Antonyms with Prefixes Worksheet with Answers

Class 6 Antonyms with Prefixes Worksheet with Answers
Last Updated At: 6 May 2026
5 min read

Grade 6 English Grammar Worksheet 6 – Antonyms with Prefixes (Un-, Dis-, In-) with Practice Exercises and Answer Key 

Learning grammar becomes easier when you understand how small changes in words can completely change their meaning. In this English grammar worksheet for Grade 6, students explore antonyms formed using prefixes such as un-, dis-, and in-. These prefixes help create opposite meanings and are commonly used in everyday language. 

This worksheet on Antonyms with Prefixes (Un-, Dis-, In-) includes engaging exercises that help students identify, sort, and use prefixed antonyms correctly. From recognizing correct meanings to filling in blanks and choosing the right options, each activity builds strong grammar skills step by step. 

Download these English grammar worksheets and practice regularly to strengthen your language skills and build a strong foundation. You can also book a free trial to get expert guidance and improve your reading, writing, and comprehension abilities. The worksheets are designed in a simple and structured way to help K–8 students learn grammar concepts easily and use them confidently in everyday communication. 

Class 6 Antonyms with Prefixes Worksheet with Answers.png

What Is the Topic? 

Antonyms with Prefixes (Un-, Dis-, In-) is the main focus of this worksheet. Prefixes are added at the beginning of words to change their meaning. In this case, prefixes like un-, dis-, and in- are used to form antonyms, or opposite words. 

In this Grade 6 English grammar worksheet, students learn how adding a prefix can change a word into its opposite. They also practice identifying whether the meaning created by the prefix is correct and how to use these words in sentences. 

What’s in This Worksheet? 

1. True or False questions where students check if the prefix antonym is correct. 
2. Sort the Words activity where students classify word pairs into prefix antonyms and not prefix antonyms. 
3. Fill in the Blanks where students choose the correct prefixed antonym based on context. 
4. Multiple Choice Questions where students select the correct prefixed antonym. 
5. Sentence Rewriting activity where students write sentences using prefixed antonyms. 

These exercises help students understand how prefixes work and how they change word meanings. The worksheet supports both learning and exam preparation in a structured way. 

Definitions, Examples, Techniques, and Tips 

Prefixes like un-, dis-, and in- are used to create opposite meanings. In this worksheet, students work with words such as unhappy, dishonest, incorrect, inactive, and impossible. 

Examples from the worksheet include: 

- Unhappy is opposite of happy. 
- Incomplete means not finished. 
- Impossible means not possible. 

Students also explore how prefixes change meanings in different contexts, such as: 

- fair → unfair 
- honest → dishonest 
- active → inactive 

Techniques used in the worksheet: 

- Identifying prefix meanings 
- Checking if the new word forms a correct antonym 
- Choosing the correct prefixed word in sentences 
- Sorting word pairs based on prefix usage 

Quick learning tips: 

- Look at the base word carefully 
- Understand what the prefix adds to the meaning 
- Check if the new word makes sense in the sentence 

Why Is It Important to Learn This? 

Learning antonyms with prefixes helps students expand their vocabulary and understand how words are formed. It makes it easier to understand new words and use them correctly in sentences. 

This topic also improves grammar skills and helps students recognize patterns in language. It is useful for exams, writing tasks, and daily communication. 

Where Will This Knowledge Help You? 

This knowledge is useful in: 
- Exams where students identify correct word meanings 
- Writing tasks where precise vocabulary is required 
- Reading comprehension where understanding prefixes is important 
- Class discussions and communication 

Knowing how prefixes change meanings helps students use English more effectively. 

How to Use This Worksheet? 

1. Attempt all questions independently before checking answers. 
2. Read each sentence carefully to understand the context. 
3. Identify the correct prefixed antonym based on meaning. 
4. Review your answers after completing the worksheet. 
5. Correct mistakes and understand errors. 
6. Practice regularly to improve grammar skills. 

The solutions follow the exact worksheet order, so students should compare their answers carefully with the given answers. 

Important Tips and Tricks 

1. Understand the meaning of prefixes like un-, dis-, and in-. 
2. Always check the base word before adding a prefix. 
3. Make sure the new word forms a correct opposite. 
4. Do not assume all prefixes create antonyms; check context. 
5. Read sentences carefully before choosing answers. 
6. Eliminate incorrect options in MCQs. 
7. Practice using prefixed antonyms in sentences. 
8. Examiners expect correct usage based on meaning. 

Complete Answer Key 

Exercise No. 1 
Choose T if the prefix antonym is correct, or F if it is incorrect. 

1. T 
2. F 
3. T 
4. F 
5. T 
6. F 
7. T 
8. F 
9. T 
10. T 

Exercise No. 2 
Sort each pair into Prefix Antonyms and Not Prefix Antonyms.

 Prefix Antonyms 
like/dislike 
do/undo 
correct/incorrect 
known/unknown 
happy/unhappy 
honest/dishonest 
possible/impossible 
active/inactive 
fair/unfair 
clear/unclear 

Not prefix antonyms 
hot/cold 
fast/slow 
tall/short 
open/close 
early/late 

Exercise No. 3 
Choose the correct prefixed antonym from the options to complete each sentence. 

1. incorrect 
2. unsafe 
3. unfriendly 
4. inactive 
5. unfair 
6. dishonest 
7. impossible 
8. disagree 
9. unfinished 
10. unclear 

Exercise No. 4 
Choose the correct prefixed antonym that best fits the sentence. 

1. incorrect 
2. incomplete 
3. unkind 
4. inactive 
5. unfair 
6. dishonest 
7. impossible 
8. disagree 
9. unfinished 
10. unclear 

Exercise No. 5 
Write one sentence using the antonym with a prefix for each given word. 

Answers may vary. 

Practicing this English grammar worksheet for Grade 6 on Antonyms with Prefixes (Un-, Dis-, In-) will help you understand how prefixes change word meanings and improve your vocabulary. Keep practicing regularly to become more confident in using English correctly. 

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