superiority complex
noun [ C usually singular ] informal uk/suː.pɪə.riˈɒr.ɪ.ti ˌkɒm.pleks/ us/suː.pɪr.iˈɔːr.ə.t̬i ˌkɑːm.pleks/
优越感；优越情结
If you have a superiority complex, you believe that you are better, cleverer, or more important than other people.