The adjective chauvinistic is useful for describing people who strongly believe in the superiority of their own gender or kind. A chauvinistic man might say women are too emotional to hold stressful jobs.
If you believe that your gender, culture, country, or group is inherently better than another, you are chauvinistic, which is pronounced "sho-van-IS-tick." Chauvinistic is used often to describe sexism, but it also means extreme patriotism, or the belief that your country is better than others. In fact, the root is the French chauvinisme, "exaggerated, blind patriotism," which comes from Nicholas Chauvin, a famously nationalistic Napoleonic soldier.