Grisly morgues out East (8)
I believe the answer is:
gruesome
'grisly' is the definition.
('gruesome' can be a synonym of 'grisly')
'morgues out east' is the wordplay.
'out' is an anagram indicator (out can mean wrong or inaccurate).
'east' becomes 'e' ('E' can be a synonym of 'east').
'morgues' with letters rearranged gives 'gruesom'.
'gruesom'+'e'='GRUESOME'
(Other definitions for gruesome that I've seen before include "Repulsive, horrid" , "Go, resume being revolting or gruesome" , "Extremely unpleasant" , "Causing horror or repulsion" , "Repulsive, horrific" .)