See brazen in Webster's New World Roget's A-Z Thesaurus II
adjective
Rude and disrespectful:
assuming, assumptive, audacious, bold, boldfaced, brash, cheeky, contumelious, familiar, forward, impertinent, impudent, insolent, malapert, nervy, overconfident, pert, presuming, presumptuous, pushy, sassy, saucy, smart. (Informal) brassy, flip, fresh, smart-alecky, snippety, snippy, uppish, uppity. (Slang) wise1. See attitude, courtesyCharacterized by or done without shame:
bald-faced, barefaced, blatant, brazenfaced, shameless, unabashed, unblushing. (Informal) brassy. See courtesy, respect, right
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