pestiferous

pestiferous is an   Adverb

Definition:

[1] Pest-bearing; pestilential; noxious to health; malignant; infectious; contagious; as, pestiferous bodies. "Poor, pestiferous creatures begging alms." Evelyn. "Unwholesome and pestiferous occupations." Burke.

[2] Noxious to peace, to morals, or to society; vicious; hurtful; destructive; as, a pestiferous demagogue. Pestiferous reports of men very nobly held. Shak.

Synonyms: