Improve morally (7)
I believe the answer is:
elevate
'improve morally' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for elevate that I've seen before include "Improve morally" , "Lift - exalt - promote - cheer" , "'Raise, upgrade (7)'" , "Lift to higher place or position" , "Hoist" .)