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Revise Root Words: Adding Prefixes 2

In this worksheet, students choose the correct prefix to change a word into its antonym (opposite).

'Revise Root Words: Adding Prefixes 2' worksheet

Key stage:  KS 2

Curriculum topic:  Reading: Word Reading

Curriculum subtopic:  Root Word Awareness

Difficulty level:  

Worksheet Overview

QUESTION 1 of 10

 

A prefix is a letter or group of letters added to the beginning of a word. Knowing what a prefix means can help us to understand new words.

 

There are many different prefixes that change a word into its antonym (opposite).

lucky / unlucky

appear / disappear

visible / invisible

possible / impossible

legal / illegal

 

In this activity, you can practise choosing the correct prefix to create antonyms. You may find a dictionary helpful if you are not sure which one is correct.

dictionary

Choose the correct antonym of the word agree.

unagree

disagree

inagree

Choose the correct antonym of the word convenient.

unconvenient

disconvenient

inconvenient

Choose the correct antonym of the word fair.

unfair

infair

imfair

Choose the correct antonym of the word probable.

unprobable

disprobable

improbable

Choose the correct antonym of the word qualify.

imqualify

disqualify

inqualify

Add the correct prefix to the word obey to make it into its antonym.

 

Write the new word in the answer box.

Add the correct prefix to the word friendly to make it into its antonym.

Add the correct prefix to the word sensitive to make it into its antonym.

Add the correct prefix to the word allow to make it into its antonym.

Add the correct prefix to the word certain to make it into its antonym.

  • Question 1

Choose the correct antonym of the word agree.

CORRECT ANSWER
disagree
EDDIE SAYS
'I have to disagree, my first choice is scrambled eggs on toast.'
  • Question 2

Choose the correct antonym of the word convenient.

CORRECT ANSWER
inconvenient
EDDIE SAYS
'It was inconvenient to walk the dog on Sunday, Monday morning would have been a much better time.'
  • Question 3

Choose the correct antonym of the word fair.

CORRECT ANSWER
unfair
EDDIE SAYS
'You are being unfair, it's my turn next!'
  • Question 4

Choose the correct antonym of the word probable.

CORRECT ANSWER
improbable
EDDIE SAYS
'Your story about the dragon seems quite improbable!'
  • Question 5

Choose the correct antonym of the word qualify.

CORRECT ANSWER
disqualify
EDDIE SAYS
'We will have to disqualify you, for cheating!' How are you doing so far? You are halfway through now. Keep up the hard work!
  • Question 6

Add the correct prefix to the word obey to make it into its antonym.

 

Write the new word in the answer box.

CORRECT ANSWER
disobey
EDDIE SAYS
'If you disobey me, I will throw you in jail!'
  • Question 7

Add the correct prefix to the word friendly to make it into its antonym.

CORRECT ANSWER
unfriendly
EDDIE SAYS
'The giant snake seemed unfriendly at first, then he hissed and slowly slithered away.'
  • Question 8

Add the correct prefix to the word sensitive to make it into its antonym.

CORRECT ANSWER
insensitive
EDDIE SAYS
'He had a very cold and insensitive nature.'
  • Question 9

Add the correct prefix to the word allow to make it into its antonym.

CORRECT ANSWER
disallow
EDDIE SAYS
'The referee chose to disallow the goal.'
  • Question 10

Add the correct prefix to the word certain to make it into its antonym.

CORRECT ANSWER
uncertain
EDDIE SAYS
'He was uncertain about which way to walk home.'
---- OR ----

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