Chauvinism

Concise Oxford English Dictionary © 2008 Oxford University Press:
chauvinism /ˈʃəʊv(ɪ)nɪz(ə)m/

▶noun

• 1 exaggerated or aggressive patriotism.

• 2 excessive or prejudiced support or loyalty for one's own cause, group, or sex.

– derivatives
chauvinist noun & adjective,
chauvinistic adjective,
chauvinistically adverb.

– origin C19: named after Nicolas Chauvin, a Napoleonic veteran noted for his extreme patriotism.