Wailing wraith (7)
I believe the answer is:
banshee
'wailing wraith' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for banshee that I've seen before include "Wailing woman from Gaelic myth" , "Irish female spirit who warns of an impending death" , "Howler" , "Portent of death" , "no one wishes to hear" .)