morbid

US /ˈmɔːr.bɪd/
UK /ˈmɔːr.bɪd/
"morbid" picture
1.

characterized by or appealing to an abnormal and unhealthy interest in disturbing and unpleasant subjects, especially death and disease

:
He has a morbid fascination with true crime stories.
The novel explores the character's morbid thoughts about death.
2.

of the nature of or indicating disease

:
The doctor observed some morbid changes in the tissue.
Morbid obesity is a serious health condition.