Aggressively masculine (5)
I believe the answer is:
macho
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">aggressively masculine</span>' is the definition.<br/ ><span class="explanation-format__explanation">(macho means aggressively masculine)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for macho that I've seen before include "Aggressively male" , "Jock" , "Exaggeratedly masculine" , "Affectedly virile" , "Ultra-masculine" .)