Grade 5

Prefixes, suffixes, and word meaning

Use small word parts to unlock new meanings and grow vocabulary more efficiently.

Category: Grammar in Use 11 min Advanced
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A prefix comes at the beginning of a word and a suffix comes at the end. Both can change meaning or function.

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U Picture card
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Unhappy means not happy because the prefix un- changes the meaning.

prefix meaning

Look at what the base word means before adding the prefix.

Example: un- often means not.

C Picture card
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Careful becomes carefully when the suffix -ly changes it into an adverb.

suffix meaning

Suffixes can change how a word works in a sentence.

Example: carefully tells how something is done.

R Picture card
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Reusable includes the base word use and the suffix -able, meaning 'able to be used again.'

word building

Break the word into parts to understand it.

Example: reusable means can be used again.

V Picture card
Sound card Quick practice

Vocabulary habit: When you meet a new word, check whether a familiar prefix or suffix gives a clue.

reading strategy

This helps learners infer meaning independently.

Example: Word parts support vocabulary growth.

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