Nazi

(historical) A member of the Nazi Party (the National Socialist German Workers' Party or NSDAP).

One who subscribes to or advocates (neo-)Nazism or a similarly fascist, racist (especially anti-Semitic), xenophobic, ethnic supremacist, or ultranationalist ideology; a neo-Nazi.

(slang, usually derogatory, sometimes offensive, see usage notes below) One who imposes their views on others; one who is unfairly oppressive or needlessly strict. (also frequently uncapitalised: nazi)

(offensive, ethnic slur, rare) A German, a person of German descent, or a person perceived to be of German descent.