An insulting way of thinking or behaving that comes from believing that you are better, smarter, or more important than other people. This is Webster's definition of arrogance but I need to add a bit more to the definition as I have found arrogance is usually based in one really feeling of less value. This person has to try to convenience others of his or her superiority because really they feel inferior that's why they put on the mask of arrogance. I equate it to someone trying to con his or her way into or out of a situation by masking their true selves! I have met lots of people who masqueraded as arrogant but in the end they were just insecure people trying to persuade others to buy into their self lie!! Arrogance is annoying and off putting and revealing all at the same time. I have found arrogant people to really be pathetic when the dust settles. The reason for the arrogance is usually because these people ARE inferior in some way so the masquerade is essential. The thing that astounds me is how some people get away with this masquerade for years!!! How in the world do they convince people of this charade without being called out? Arrogance is so unnecessary so unwarranted and usually outgrown but sometimes it's not. There are few things more exasperating than someone older than 20 years old who has not learned how annoying their stupid arrogance is!!