Morbid, gruesome (7)
I believe the answer is:
macabre
I believe this is a double definition.
'morbid' is the first definition.
(thesaurus)
'gruesome' is the second definition.
(both can mean morbid or disturbing)
(Other definitions for macabre that I've seen before include "Dark and disturbing" , "Brace ma, being gruesome" , "'Grisly, gruesome (7)'" , "Ghastly, gruesome" , "Shockingly horrible" .)