Avenger moved to impress deeply (7)
I believe the answer is:
engrave
'impress deeply' is the definition.
(I've seen this in another clue)
'avenger moved' is the wordplay.
'moved' indicates anagramming the letters.
'avenger' with letters rearranged gives 'ENGRAVE'.
'to' is the link.
(Other definitions for engrave that I've seen before include "impress deeply" , "Cut (design) into a hard surface" , "To make an impression" , "Carve into surface as of medal" , "Fix" .)