Feel remorse for (3)
I believe the answer is:
rue
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">feel remorse for</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 rue that I've seen before include "repentance" , "Wish not to have been" , "show regret" , "Plant producing oil" , "Regret in a French street" .)