Dumasaphobia is a phobia where you are afraid of dumb people. If you have dumasaphobia, you will be afraid or have a fear of senseless people. They can be customers, your boss, a friend, a stranger, a student, your own teacher, or pretty much anyone you know. It seems rude, but it's just a phobia. For example, you might have dumasaphobia. If you do, you'd be afraid of dumb people, no matter who they are. For example, if someone has mental retardation, a person with this phobia (Dumasaphobia), they will just ignore them or just avoid them as much as possible. For example, if Justin has dumasaphobia and he thinks that his colleague , Richard, is dumb, he will avoid him as much as possible.