- morbid
- 1650s, "of the nature of a disease, indicative of a disease," from L. morbidus "diseased," from morbus "sickness, disease," from root of mori "to die," or from PIE base *mor- "to rub, pound, wear away" (cf. Gk. marainein "to consume, exhaust," marasmus "consumption"). Transferred use, of mental states, is from 1777. Related: Morbidly.