PEST'ILENT, a. L. pestilens, from pestis, plague.

1. Producing the plague, or other malignant, contagious disease noxious to health and life as a pestilent air or climate.
2. Mischievous noxious to morals or society destructive in a general sense as pestilent books.
3. Troublesome mischievous making disturbance corrupt as a pestilent fellow. Acts 24