Feral (4)
I believe the answer is:
wild
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">feral</span>' is the definition.<br/ ><span class="explanation-format__explanation">(similar in meaning)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for wild that I've seen before include "Not tamed" , "Fierce" , "Not domesticated" , "Born Free?" , "Feral - crazy" .)