Effrontery (5)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">effrontery</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for nerve that I've seen before include "Hold it and maintain courage" , "Coolness under fire" , "Courage, like bodily fibre" , "Bundle of fibres in the body (5)" , "Bodily fibre carrying sensation" .)
(Other definitions for brass neck that I've seen before include "Effrontery" , "Offering cheek" .)