Unsuspicious (8)
I believe the answer is:
trustful
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">unsuspicious</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 trustful that I've seen before include "Having confidence in someone's integrity" , "Not suspicious" .)