The Collaborative International Dictionary
Morbific
Morbific \Mor*bif"ic\, Morbifical \Mor*bif"ic*al\, a. [L. morbus disease + -ficare (in comp.) to make: cf. F. morbifique. See -fy.] Causing disease; generating a sickly state; as, a morbific matter.
Wiktionary
morbific
a. That causes disease; sickening, pathogenic.
WordNet
morbific
adj. able to cause disease; "infective agents"; "pathogenic bacteria" [syn: infective, pathogenic]
Usage examples of "morbific".
Louis XIII and author of the celebrated book The Morbific Hydra Exterminated by the Chemical Hercules.
But it did not, and the morbific swamp mists began to cause illnesses and grudges and quarrels among the men.
This state of affairs had existed from childhood, and, as the evacuations were abundant and connected, no morbific change or malformation seemed present.