PESTIF'EROUS, adjective [Latin pestis, plague, and fero, to produce.] 1. Pestilential; noxious to health; malignant; infectious; contagious. 2. Noxious to peace, to morals or to society; mischievous; destructive. 3. Troublesome; vexatious.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI