Give confidence to (6)
I believe the answer is:
assure
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">give confidence to</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for assure that I've seen before include "Convince, satisfy" , "Say positively" , "Convince, promise" , "Tell positively" , "Make (something) certain to happen" .)