Turn turtle (7)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">turn turtle</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for capsize that I've seen before include "Of boat, turn turtle" , "Turn so that keel faces upwards" , "Upset" , "Overturn (a boat)" .)
(Other definitions for upend that I've seen before include "Stand erect" , "Set (something) vertical" , "Topple" , "Tip on side" , "Affect greatly" .)