<adj.all> dirty wounds obliged to go into infected rooms
likely to spread and cause an epidemic disease
<adj.all> a pestilential malignancy in the air plaguey fevers
tending to corrupt or pervert
<adj.all>
causing irritation or annoyance
<adj.all> 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
Pestiferous \Pes*tif"er*ous\, a. [L. pestiferus, pestifer; pestis pest + ferre to bear: cf. F. pestif[`e]re.] 1. Pest-bearing; pestilential; noxious to health; malignant; infectious; contagious; as, pestiferous bodies. ``Poor, pestiferous creatures begging alms.'' --Evelyn. ``Unwholesome and pestiferous occupations.'' --Burke.
2. Noxious to peace, to morals, or to society; vicious; hurtful; destructive; as, a pestiferous demagogue.
Pestiferous reports of men very nobly held. --Shak.
In one case, appeals judges called a patent lawsuit a "singularly sanctionable sojourn" and a "pestiferous pestilence."