Veto
Definition 1 of 4
Pro Tip 1/2
Government Authority
Veto as a noun often relates to official governmental powers and is considered a formal term. The mayor's veto prevented the new parking ordinance.
Pro Tip 2/2
Rare Personal Use
While veto originates from government use, it can be used personally to humorously show strong opposition. Mom put a veto on junk food in our house.