More secure (5)
I believe the answer is:
safer
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">more secure</span>' is the definition.<br/ ><span class="explanation-format__explanation">('safe' can be a synonym of 'secure')</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for safer that I've seen before include "Less dangerous" , "Less adventurous" , "Less endangered" , "Less hazardous" , "Fears (anag)" .)