Definitions of pestiferous
  1. adjective
    contaminated with infecting organisms
    synonyms: dirty
    infected, septic
    containing or resulting from disease-causing organisms
  2. adjective
    likely to spread and cause an epidemic disease
    synonyms: pestilent, pestilential, plaguey
    (especially of medicine) of disease or anything resembling a disease; attacking or affecting many individuals in a community or a population simultaneously
  3. adjective
    tending to corrupt or pervert
    synonyms: corruptive, perversive
    morally bad or wrong
  4. adjective
    causing irritation or annoyance
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