—v.t. 1. to solve or conclude (a question, controversy, or struggle) by giving victory to one side: The judge decided the case in favor of the plaintiff. 2. to determine or settle (something in dispute or doubt): to decide an argument. 3. to bring (a person) to a decision; persuade or convince: The new evidence decided him.
—v.i. 1. to settle something in dispute or doubt: The judge decided in favor of the plaintiff. 2. to make a judgment or determine a preference; come to a conclusion.