More genuine; more veracious (5)
I believe the answer is:
truer
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">more genuine</span>' is the first definition.<br/ ><span class="explanation-format__explanation">('true' is associated in meaning with 'genuine')</span><br/ ><br/ >'<span class="explanation-format__original">more veracious</span>' is the second definition.<br/ ><span class="explanation-format__explanation">('true' can be similar in meaning to 'veracious')</span><br/ ><br/ ></span>
(Other definitions for truer that I've seen before include "That's more like it" , "More in accordance with fact" , "More faithful or straight" , "More accurate" , "More exact" .)