- (a.) Noxious to peace, to morals or to society; vicious; hurtful; destructive; as, a pestiferous demagogue.
- (a.) Pest-bearing; pestilential; noxious to health; malignant; infectious; contagious; as, pestiferous bodies.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). pestiferous. Retrieved September 25, 2026, from http://smartdefine.org/pestiferous/definitions/2044323 |
| Chicago | Webster's. 2011. "pestiferous" http://smartdefine.org/pestiferous/definitions/2044323 (accessed September 25, 2026). |
| Harvard | Webster's 2011, pestiferous, Smart Define, viewed 25 September, 2026, <http://smartdefine.org/pestiferous/definitions/2044323>. |
| MLA | Webster's. "pestiferous" 27 May 2011. Web. 25 September 2026. <http://smartdefine.org/pestiferous/definitions/2044323> |