Unfeigned, genuine (7)
I believe the answer is:
sincere
I believe this is a double definition.
'unfeigned' is the first definition.
(similar in meaning)
'genuine' is the second definition.
(sincere can mean authentic or genuine)
(Other definitions for sincere that I've seen before include "Open and genuine, not deceitful" , "Free from deception" , "'Genuine, not deceitful (7)'" , "Unfeigned, genuine" , "(Of person) genuine" .)