morbid

Given to or characterized by unwholesome thoughts or feelings, especially of death or disease.

Of, relating to, or caused by disease; pathological or diseased.

Psychologically unhealthy or unwholesome.

Diseased; sickly; not sound and healthful. As applied to mental conditions, it commonly implies an over-sensitive state, involving depression of spirits, in which matters affecting the emotions assume an exaggerated significance.

Proceeding from or characteristic of disease or a diseased condition.