Heighten (7)
'heighten' is the definition.
(synonyms)
This is all the clue.
(Other definitions for enhance that I've seen before include "Increase attractiveness of, improve" , "Improve quality (of item)" , "Improve the value of (something)" , "Make better or more attractive" , "produce better image" .)
'heighten' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for elevate that I've seen before include "Raise to a higher position" , "To raise in level" , "Uplift" , "Improve morally" , "'Raise, upgrade (7)'" .)