Not having submitted to pressure (7)
I believe the answer is:
unbowed
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">not having submitted to pressure</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for unbowed that I've seen before include "Upright, refusing to yield" , "Undo web? (anag)" , "Not accepting demands" , "defiant?" , "Not defeated" .)