Brazen (9)
'brazen' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for shameless that I've seen before include "Quite brazen" , "Barefaced, unabashed" , "Immodest; brazen" , "Brazenly showing no regret" .)
(Other definitions for unashamed that I've seen before include "not apologetic" , "Unabashed" , "lacking any feeling of guilt" , "Not embarrassed" , "Without guilt or embarrassment" .)
(Other definitions for audacious that I've seen before include "Bold - impertinent" , "Intrepid" , "Bold and daring" , "Dare-devil" , "Recklessly bold" .)