KJV Dictionary Definition: pernicious
pernicious
PERNI'CIOUS, a. L. perniciosus, from pernicies; perneco, to kill; per and nex, necis,death.
1. Destructive; having the quality of killing, destroying or injuring; very injurious or mischievous. Food, drink or air may be pernicious to life or health.
2. Destructive; tending to injure or destroy. Evil examples are pernicious to morals. Intemperance is a pernicious vice.
3. L. pernix. Quick. Not used.
perniciously
PERNI'CIOUSLY, adv. Destructively; with ruinous tendency or effects.
perniciousness
PERNI'CIOUSNESS, n. The quality of being very injurious, mischievous or destructive.