Took steps to prevent the strike.
Prevented us from winning; prevented the disease from spreading.
We pray thee that thy grace may always prevent and follow us.
Then had I come, preventing Sheba's queen.
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.
There will be a picnic if nothing prevents.
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 praeveniÅ (“anticipate"), from prae (“before") + veniÅ (“come").