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Related to pestiferously: begrimed


a. Producing or breeding infectious disease.
b. Infected with or contaminated by an epidemic disease.
2. Morally evil or deadly; pernicious.
3. Bothersome; annoying.

[Middle English, from Latin pestiferus, variant of pestifer : pestis, pestilence; see pest + -fer, -fer.]

pes·tif′er·ous·ly adv.
pes·tif′er·ous·ness n.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
References in classic literature ?
After its first blunder-born discovery by a Dutchman, all other ships long shunned those shores as pestiferously barbarous; but the whale-ship touched there.
Neither Smith nor Jeffrey had shown exceptional prose gifts, or cultivated any rich patrons, or even developed a skill at placating those censors who--in the Britain of Pitt the Younger as afterward in the Austria of Metternich--spied pestiferously on suspected radicals, even while incapable of serious doctrinal combat against them.
With only hawks and owls for enemies, crow numbers can increase pestiferously. In the corn-producing states, we find the most accomplished crow hunters and long-held traditions in the sport.