Year 1 - Prefix un

Prefix un informs KS1 children that the root word stays the same but the meaning can be changed by this prefix. The words are taken from the recommended spellings in the National Curriculum.

Sometimes we can say the opposite of something by adding the letters ‘un’ to a word. If I’m not happy, I can say I’m ‘unhappy’ – the word ‘un’ is added to the beginning of the word to show that I’m not happy. See if you can get full marks on these words that can start with the prefix ‘un'.

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  1. Spell the missing word: That was very ____ of you.
    Another word for unkind is mean.
  2. Spell the missing word: It was too hard and so he was ____ to finish the test.
    In England, during our final years at school we sit tests called GCSEs.
  3. Spell the missing word: I'm feeling a bit ____.
    If you feel sick when in a car, on a train or plane - this is called motion sickness.
  4. If you do something up, I now want you to do the opposite, so you need to ____ it.
    All you need to do is write the prefix 'un' before the word 'do'.
  5. You need a key to ____ that padlock.
    If you fix locks you are called a locksmith.
  6. You didn't play fair, so that was ____ of you.
    The word 'fair' stays the same - this is called the root word. Imagine a tree with roots, it stays there and doesn't move, just like these root words.
  7. Spell the missing word: Have you ____ your top button?
    When we are full up, we sometimes undo our top button to stop it pushing into our growing bellies!
  8. Spell the missing word: I'm so ____.
    Being unfit makes you gain weight and is bad for your health.
  9. Spell the missing word: Please will you help me ____ my coat?
    The largest zip making company in the world is called YKK.
  10. If you load the dishwasher, I now want you to do the opposite, so you need to ____ the dishwasher.
    The word 'load' stays the same and the spelling stays the same - all you need to do is add 'un' to the beginning.

Author: Finola Waller

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