Grisly bar came out (7)
I believe the answer is:
macabre
'grisly' is the definition.
(synonyms)
'bar came out' is the wordplay.
'out' is an anagram indicator (out can mean wrong or inaccurate).
'bar'+'came'='barcame'
'barcame' with letters rearranged gives 'MACABRE'.
(Other definitions for macabre that I've seen before include "Ghostly appearance" , "'Grisly, gruesome (7)'" , "Morbidly repellent" , "Brace ma, being gruesome" , "'Sinister, gruesome (7)'" .)