brazen

Concise Oxford English Dictionary © 2008 Oxford University Press:
brazen /ˈbreɪz(ə)n/

▶adjective

• 1 bold and shameless.

• 2 chiefly literary made of brass.

▶verb (brazen it out) endure a difficult situation with apparent confidence and lack of shame.

– derivatives
brazenly adverb,
brazenness noun.

– origin OE bræsen ‘made of brass’, from bræs ‘brass’.