Frustrated, foiled (8)
I believe the answer is:
thwarted
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">frustrated</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I know that frustrated can be written as thwarted)</span><br/ ><br/ >'<span class="explanation-format__original">foiled</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I know that foiled can be written as thwarted)</span><br/ ><br/ ></span>
(Other definitions for thwarted that I've seen before include "Frustrated and foiled" , "stopped?" , "Prevented from succeeding (in something)" .)