chauvinist
This term carries a strong negative connotation of arrogance and blind loyalty. While it can refer to extreme nationalism, in modern conversational English, it is most frequently used to describe male chauvinism, where a belief in male superiority manifests as condescension or discrimination toward women. Unlike a patriot, who loves their country, a chauvinist believes their group is inherently superior to all others. The word functions as both a label for the person and a descriptor for the behavior or ideology.
Meanings
A person who displays an excessive and aggressive patriotism or belief in the superiority of their own group, nation, or gender.
"He was labeled a chauvinist for his constant claims that his country was the only civilized nation on earth."