noun
chauvinist
Refers to a person with excessive or aggressive patriotism, or more broadly, someone who is prejudiced in favor of their own group (e.g., male chauvinist).
彼は自分の国が一番だと思っているショービニストだ。
He is a chauvinist who thinks his country is the best.
あの政治家の演説は
That politician's speech is chauvinistic and disparages other countries.