morbific

from WordNet (r) 3.0 (2006)

morbific
    adj 1: able to cause disease; "infective agents"; "pathogenic
           bacteria" [syn: {infective}, {morbific}, {pathogenic}]

from The Collaborative International Dictionary of English v.0.48

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.
   [1913 Webster]

from Moby Thesaurus II by Grady Ward, 1.0

21 Moby Thesaurus words for "morbific":
      bad, bad for, contaminated, foul, harmful, injurious, insalubrious,
      insanitary, noisome, noxious, pathogenic, peccant, pestiferous,
      polluted, septic, tainted, unhealthful, unhealthy, unhygienic,
      unsanitary, unwholesome

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