Enduring, lasting (7)
I believe the answer is:
abiding
This clue is a double definition.
'enduring' is the first definition.
('abide' can be a synonym of 'endure')
'lasting' is the second definition.
(similar in meaning)
(Other definitions for abiding that I've seen before include "Persisting" , "(Of memory) enduring" , "Unceasing or putting up with" , "bearing" , "Established" .)