1. Not sound and healthful; induced by a diseased or abnormal condition; diseased; sickly; as, morbid humors; a morbid constitution; a morbid state of the juices of a plant. Her sick and morbid heart.
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.
Origin: L. Morbidus, fr. Morbus disease; prob. Akin to mori to die: cf. F. Morbide, It. Morbido. See Mortal.