Doubly expensive words of pity (4,4)
I believe the answer is:
dear dear
'words of pity' is the definition.
I don't know anything about this answer so I cannot tell whether this works.
'doubly expensive' is the wordplay.
'doubly' says to double the letters.
'expensive' becomes 'dear' (similar in meaning).
'dear' duplicated is 'DEAR DEAR'.
Can you help me to learn more?
(Other definitions for dear dear that I've seen before include "That's a pity!" , "Expression of dismay" , "Too bad!" .)