pestiferous

形容词 pestiferous:

1. contaminated with infecting organisms- Jane Austen
   同义词：contaminated, dirty
2. likely to spread and cause an epidemic disease
   同义词：pestilent, pestilential, plaguey
3. tending to corrupt or pervert
   同义词：corruptive, perversive
4. causing irritation or annoyance
   同义词：annoying, bothersome, galling, irritating, nettlesome, pesky, pestering, plaguy, plaguey, teasing, vexatious, vexing

pes.tif.er.ous

adj.（形容词）

Producing or breeding infectious disease.
传播疾病的，引起瘟疫的：产生或繁殖传染病的
Infected with or contaminated by an epidemic disease.
染上瘟疫的：患有传染病或被传染病污染的
Morally evil or deadly; pernicious.
道德败坏的，致命的；有害的
Bothersome; annoying.
麻烦的；恼人的

来源：
Middle English
中古英语
from Latin pestiferus
源自 拉丁语 pestiferus
variant of pestifer
pestifer的变体
pestis [pestilence] * see pest
pestis [瘟疫，有害物] *参见 pest
-fer [-fer]
-fer [后缀，表示.媒介，负荷，生产.之意]

【引伸】
pestif.erously
adv.（副词）
pestif.erousness
n.（名词）