Celibate (6)
I believe the answer is:
chaste
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">celibate</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 chaste that I've seen before include "Innocent" , "virgin" , "Modest and virtuous" , "Pure and decent" , "He-cats could be virtuous, strangely" .)