All 3 Uses

brazen
in
Gone with the Wind
(Edited)

The inmates of these houses were bolder than the prostitutes of the war days and brazenly hung out of their windows and called to passers-by.
Chpt 4.37 *

brazenly = boldly and unrestrained by what others consider proper
At least, said the ladies of the town, it's better than riding around so brazenly with that Butler man.
Chpt 4.42
Separately the two of them could be endured, but the brazen combination of Scarlett and Rhett was too much to be borne.
Chpt 4.47

brazen = bold and improper

Definitions:

(1) (brazen)
bold and unrestrained by what others consider proper
(2) (meaning too rare to warrant focus)
Less commonly, brazen can reference something made of or resembling brass (as in color or hardness). It can also reference an especially loud or harsh sound.