Commonly Used Prefixes

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What does the prefix 'fore-' mean?

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The prefix 'fore-' means 'before' or 'front of'. For example, 'foresee' means to see beforehand.

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What does the prefix 'in-' or 'im-' mean?

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The prefixes 'in-' and 'im-' mean 'not'. For example, 'incomplete' means not complete.

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What does the prefix 'over-' mean?

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The prefix 'over-' means 'over' or 'too much'. For example, 'overestimate' means to estimate too highly.

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What does the prefix 'en-' or 'em-' mean?

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The prefixes 'en-' and 'em-' mean 'cause to'. For example, 'enable' means to make able.

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What does the prefix 're-' mean?

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The prefix 're-' means 'again'. For example, 'redo' means to do again.

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What does the prefix 'anti-' mean?

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The prefix 'anti-' means 'against'. For example, 'antibiotic' means against life (bacteria).

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What does the prefix 'mis-' mean?

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The prefix 'mis-' means 'wrongly'. For example, 'misunderstand' means to understand wrongly.

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What does the prefix 'sub-' mean?

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

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What does the prefix 'semi-' mean?

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The prefix 'semi-' means 'half' or 'partly'. For example, 'semicircle' means half a circle.

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What does the prefix 'non-' mean?

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The prefix 'non-' means 'not' or 'without'. For example, 'nonfiction' means not fiction.