fool verb definition in Dishonest topic from the Oxford Advanced Learner's Dictionary

fool

 verb: Dishonest topic
[transitive] to trick somebody into believing something that is not true fool somebody You don't fool me! She certainly had me fooled—I really believed her! fool yourself You're fooling yourself if you think none of this will affect you. fool somebody into doing something Don't be fooled into thinking they're going to change anything.