Wrong for the situation
I believe the answer is:
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">wrong for the situation</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 inapt that I've seen before include "Not proper" , "Not suitable or appropriate" , "Useless" , "Ill-chosen, not suitable" , "Not fit, unsuitable" .)