Feeble person (4)
I believe the answer is:
wimp
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">feeble person</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for wimp that I've seen before include "Informally, an ineffectual man" , "Unassertive person" , "Feeble or ineffectual person" , "Informally, an ineffective man" , "Weak individual" .)