vetoyoudaoicibaDictYouDict
veto: [17] Latin vetō meant ‘I forbid’ (it was the first person present singular of vetāre ‘forbid’, a verb of uncertain origin which may be related to Welsh gwadu ‘deny’). It was used in the Roman senate by tribunes of the people as a formula for objecting to proposals, and it was originally introduced into English as part of the terminology of parliamentary procedure.
veto (n.)youdaoicibaDictYouDict
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.)youdaoicibaDictYouDict
1706, from veto (n.). Related: Vetoed; vetoing.