Disastrous, calamitous
Causing despair; gloomy and bleak.
Depressing, dreary, cheerless.
Disappointingly inadequate.
Grisly or gruesome.
Of, or relating to disease.
Suggesting the horror of death; macabre or ghoulish.
Taking an interest in, or fixating on, unhealthy or unwholesome subjects such as death, decay, disease.