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Understand and Spell Words with the Prefix un-

In this worksheet, students consider the meaning of words with the prefix un- and practise spelling them.

'Understand and Spell Words with the Prefix un-' worksheet

Key stage:  KS 1

Year:  Year 1 English worksheets

Curriculum topic:   Writing: Transcription

Curriculum subtopic:   Use the Prefix un-

Difficulty level:  

Worksheet Overview

Using prefixes

A root word is a word on it's own. A prefix is a letter or group of letters added to the beginning of a root word. 

Here are some common prefixes:

un (untidy)

dis (disorganised)


Knowing what a prefix means can help us to understand new words.


For example, the prefix un- means 'not'.

un (prefix) + happy (root word) = unhappy 

un (prefix) + well (root word) = unwell

un (prefix) + kind (root word) = unkind


Did you notice how there are no finger spaces between the prefix and the root word? They are all the same word. 


Let's have a go at adding the prefix un to some words.

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