Frustrates (5)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">frustrates</span>' is the definition.<br/ ><span class="explanation-format__explanation">('foil' can be a synonym of 'frustrate')</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Another definition for foils that I've seen is " Thwarts with kinds of swords".)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">frustrates</span>' is the definition.<br/ ><span class="explanation-format__explanation">('thwart' can be a synonym of 'frustrate')</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for thwarts that I've seen before include "Blocks, prevents" , "Frustrates" .)