1. defeat, stop, or counter something/someone
Professional
Social
if we don't succeed then it will be checkmate
In the game of chess, checkmate means that your King piece on the board is in threat of being captured and there is no way to avoid the threat. When you are in checkmate the opponent is the winner of the game. Checkmate is used to describe a position where a person is trapped or powerless and someone else is in control or has power.