MORBIFIC
Source: 566, 567
morbific. Morbific, a. causing or tendign to diseases
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{ Mor‐bif″ic (?), 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.