More genuine; more veracious (5)
I believe the answer is:
truer
This clue is a double definition.
'more genuine' is the first definition.
('true' is associated in meaning with 'genuine')
'more veracious' is the second definition.
('true' can be similar in meaning to 'veracious')
(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" .)