Improve morally in lift (7)
I believe the answer is:
elevate
I believe this is a double definition.
'improve morally' is the first definition.
(I've seen this before)
'lift' is the second definition.
(to elevate is to lift up)
'in' is the link.
(Other definitions for elevate that I've seen before include "Lift to higher place or position" , "Improve morally" , "Uplift" , "Raise to a higher position" , "To raise in level" .)