Bold as brass (6)
I believe the answer is:
brazen
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">bold as brass</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for brazen that I've seen before include "Forward" , "Bold-faced" , "Impudent, shameless" , "Shameless (impudence)" , "Shameless and bold - resembling brass" .)