Cancer is the most pernicious, insidious, disgusting disease of life.
Dictators are merely misunderstood, and higher living standards are a symptom of pernicious influences like "westernization".
Focusing on the real game is a smart approach, because the expectations market can create a pernicious trap.
early 15c., from Middle French pernicios (13c., Modern French pernicieux) and directly from Latin perniciosus "destructive," from pernicies "destruction, death, ruin," from per- "completely" (see per) + necis "violent death, murder," related to necare "to kill," nocere "to hurt, injure, harm," noxa "harm, injury" (see noxious). Related: Perniciously; perniciousness.
pernicious per·ni·cious (pər-nĭsh'əs)
Tending to cause death or serious injury; deadly.