Smokiing is pernicious
The definition of pernicious is deadly or very destructive.
An example of pernicious is the devastating effects of intense drug use.
- causing great injury, destruction, or ruin; fatal; deadly
- Rare wicked; evil
Origin of perniciousFrench pernicieux from Classical Latin perniciosus from pernicies, destruction from pernecare, to kill from per, thoroughly + necare, to kill: see necro-
- Tending to cause death or serious injury; deadly: a pernicious virus.
- Causing great harm; destructive: pernicious rumors.
Origin of perniciousMiddle English from Old French pernicios from Latin perniciōsus from perniciēs destruction per- per- nex nec- violent death ; see nek-1 in Indo-European roots.
(comparative more pernicious, superlative most pernicious)