MISTAKEN

[adjective]If you think you can carry on drinking so much without damaging your health, then you're mistaken (= wrong).I'm afraid I was mistaken about how much it would cost.The negotiations have continued in the mistaken belief that an agreement can be reached without military intervention.Throughout his trial he claimed that the charges against him were based on a case of mistaken identity.Unless I'm very much mistaken, you still owe me fifteen pounds.