Prefixes

Front

What is a prefix?

Back

A prefix is a group of letters added to the beginning of a word to change its meaning.

Front

What does the prefix 'un-' mean?

Back

The prefix 'un-' means 'not' or 'opposite of'. For example, 'happy' becomes 'unhappy', meaning 'not happy'.

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What does the prefix 'dis-' mean?

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The prefix 'dis-' means 'not' or 'opposite of'. For example, 'approve' becomes 'disapprove', meaning 'not approve'.

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What does the prefix 'mis-' mean?

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The prefix 'mis-' means 'wrongly' or 'badly'. For example, 'understand' becomes 'misunderstand', meaning 'to understand wrongly'.

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What does the prefix 'pre-' mean?

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The prefix 'pre-' means 'before'. For example, 'historic' becomes 'prehistoric', meaning 'before recorded history'.

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What does the prefix 'sub-' mean?

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The prefix 'sub-' means 'under' or 'below'. For example, 'marine' becomes 'submarine', meaning 'under the sea'.

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What does the prefix 'semi-' mean?

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The prefix 'semi-' means 'half' or 'partially'. For example, 'circle' becomes 'semicircle', meaning 'half a circle'.

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What does the prefix 'anti-' mean?

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The prefix 'anti-' means 'against'. For example, 'bacterial' becomes 'antibacterial', meaning 'against bacteria'.

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What does the prefix 'auto-' mean?

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The prefix 'auto-' means 'self'. For example, 'biography' becomes 'autobiography', meaning 'self-written biography'.

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What does the prefix 'inter-' mean?

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The prefix 'inter-' means 'between' or 'among'. For example, 'national' becomes 'international', meaning 'between nations'.