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1. To do something before someone does something else (probably the thing that you are about to do to them) to you

2. To remove a television or other similar program from its regular airing temporarily.
1. The US decided to pre empt a strike on its soil by Iraq by striking them first.

2. The NFL has pre empted King of the Hill...again.
by dsaus April 11, 2007

Words related to pre empt

empt empted emption emptive pre