from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Tending to cause death; deadly.
- adj. Likely to cause an epidemic disease.
- adj. Infected or contaminated with a contagious disease.
- adj. Morally, socially, or politically harmful; pernicious. See Synonyms at poisonous.
- adj. Causing annoyance or disapproval.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. highly injurious or destructive to life: deadly.
- adj. annoying.
- adj. harmful to morals or public order.
from the GNU version of the Collaborative International Dictionary of English
- adj. Pestilential; noxious; pernicious; mischievous.
from The Century Dictionary and Cyclopedia
- Producing or tending to produce infectious disease; pestilential; pestiferous.
- Mischievous; noxious; pernicious; hurtful to health or morals.
- Troublesome; mischievous; making mischief or disturbance: often used humorously: as, a pestilent fellow.
- Excessively; intolerably. Compare pestilent, a., 3.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. exceedingly harmful
- adj. likely to spread and cause an epidemic disease
Middle English, from Old French, from Latin pestilēns, pestilent-, from pestis, pestilence; see pest.(American Heritage® Dictionary of the English Language, Fourth Edition)