Wonderful scrape, we hear (5)
I believe the answer is:
great
'wonderful' is the definition.
(I've seen this before)
'scrape we hear' is the wordplay.
'scrape' becomes 'grate' (synonyms).
'we hear' indicates a 'sounds like' (homophone) clue.
'grate' is a homophone of 'GREAT'.
(Other definitions for great that I've seen before include "Of major significance - very good" , "Enormous" , "Waterbird" , "Large, outstanding" , "Very large in size, quantity, etc." .)