The Collaborative International Dictionary
Morbifical
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
morbifical
a. (alternative form of morbific English)