Definition of intimidating adjective from the Oxford Advanced Learner's Dictionary. frightening in a way that makes a person feel less confident. intimidating for/to somebody This kind of questioning can be very intimidating to children. The atmosphere was less intimidating than I had imagined. INTIMIDATE definition : 1. to frighten or threaten someone, usually in order to persuade them to do something that you want…. Learn more. INTIMIDATING definition: 1. making you feel frightened or nervous: 2. making you feel frightened or nervous: . Learn more. INTIMIDATING meaning : 1. making you feel frightened or nervous: 2. making you feel frightened or nervous: . Learn more.