Prevent meaning

prĭ-vĕnt'
To keep from happening; avert.

Took steps to prevent the strike.

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To keep (a person or thing) from doing something; impede.

Prevented us from winning; prevented the disease from spreading.

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(intransitive, now rare) To take preventative measures. [from 16th c.]
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Book of Common Prayer.

We pray thee that thy grace may always prevent and follow us.

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Prior.

Then had I come, preventing Sheba's queen.

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Prevent is defined as to stop something from happening.

An example of prevent is to seat students a couple of desks away from one another to stop them from copying each other's responses on an exam.

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To present an obstacle.

There will be a picnic if nothing prevents.

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To stop or keep (from doing something)
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To keep from happening; make impossible by prior action; hinder.
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To interpose an obstacle.
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To stop; to keep (from happening). [from 16th c.]

I brushed my teeth to prevent them from going yellow.

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Origin of prevent

  • Middle English preventen to anticipate from Latin praevenīre praevent- prae- pre- venīre to come gwā- in Indo-European roots
    From American Heritage Dictionary of the English Language, 5th Edition
  • From Middle English preventen (“anticipate"), from Latin praeventus, perfect passive participle of praeveniō (“anticipate"), from prae (“before") + veniō (“come").
    From Wiktionary