1620s, from Latin veto, literally "I forbid," first person singular present indicative of vetare "forbid, prohibit, oppose, hinder," of unknown origin. In ancient Rome, the "technical term for protest interposed by a tribune of the people against any measure of the Senate or of the magistrates" [Lewis].
veto (v.)
1706, from veto (n.). Related: Vetoed; vetoing.
The President vetoed the bill
Mother vetoed the trip to the chocolate store
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