morbid

a. [ L. morbidus, fr. morbus disease; prob. akin to mori to die: cf. F. morbide, It. morbido. See Mortal. ] 1. Not sound and healthful; induced by a diseased or abnormal condition; diseased; sickly; as, a morbid condition; a morbid constitution; a morbid state of the juices of a plant. “Her sick and morbid heart.” Hawthorne. [ 1913 Webster ]

2. Of or pertaining to disease or diseased parts; as, morbid anatomy. [ 1913 Webster ]

3. Indicating an unhealthy mental attitude or disposition; especially, abnormally gloomy, to an extent not justified by the situation; preoccupied with death, disease, or fear of death; as, a morbid interest in details of a disaster. [ PJC ]

4. Gruesome; as, a morbid topic. [ PJC ]

Syn. -- Diseased; sickly; sick. -- Morbid, Diseased. Morbid is sometimes used interchangeably with diseased, but is commonly applied, in a somewhat technical sense, to cases of a prolonged nature; as, a morbid condition of the nervous system; a morbid sensibility, etc. [ 1913 Webster ]