Go out of shape (4)
I believe the answer is:
warp
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">go out of shape</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for warp that I've seen before include "Distort, ship's rope" , "Pervert - distort" , "Distort, twist" , "'Bend out of shape, with heat say (4)'" , "Make or become out of shape" .)