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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.


(pɛˈstɪfərəs) or


1. informal troublesome; irritating
2. (Pathology) breeding, carrying, or spreading infectious disease
3. corrupting; pernicious
[C16: from Latin pestifer, from pestis contagious disease, pest + ferre to bring]
pesˈtiferously adv
pesˈtiferousness n


(pɛˈstɪf ər əs)

1. bringing or bearing disease.
2. pernicious; dangerous.
3. troublesome; annoying.
[1425–75; late Middle English < Latin pestiferus plague-bringing =pesti- (s. of pestis) pest + -ferus -ferous]
pes•tif′er•ous•ly, adv.
pes•tif′er•ous•ness, n.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.pestiferous - contaminated with infecting organisms; "dirty wounds"; "obliged to go into infected rooms"- Jane Austen
infected, septic - containing or resulting from disease-causing organisms; "a septic sore throat"; "a septic environment"; "septic sewage"
2.pestiferous - likely to spread and cause an epidemic disease; "a pestilential malignancy in the air"- Jonathan Swift; "plaguey fevers"
epidemic - (especially of medicine) of disease or anything resembling a disease; attacking or affecting many individuals in a community or a population simultaneously; "an epidemic outbreak of influenza"
3.pestiferous - tending to corrupt or pervert
evil - morally bad or wrong; "evil purposes"; "an evil influence"; "evil deeds"
4.pestiferous - causing irritation or annoyancepestiferous - causing irritation or annoyance; "tapping an annoying rhythm on his glass with his fork"; "aircraft noise is particularly bothersome near the airport"; "found it galling to have to ask permission"; "an irritating delay"; "nettlesome paperwork"; "a pesky mosquito"; "swarms of pestering gnats"; "a plaguey newfangled safety catch"; "a teasing and persistent thought annoyed him"; "a vexatious child"; "it is vexing to have to admit you are wrong"
disagreeable - not to your liking; "a disagreeable situation"


adjverpestet; (inf: = annoying) → lästig