Not long ago, polite society had only begun to tolerate slamming the Electoral College as a perniciously quaint old institution.
Certain physiological processes come to have for him an unclean flavour which is yet perniciously attractive.
He explained that Allen had been a feeble speculator, but plausible, of personal good faith, and perniciously sanguine.
And probably I've behaved more foolishly and perniciously than ever you will.
These indefinite expressions operated powerfully and perniciously on his imagination.
In these matters his aims were generous, if his methods were perniciously mistaken.
He approached me with outstretched hand; he was perniciously polite; his ingratiating smile fired my soul with a lust of blood.
Thou hast devilishly and perniciously abstained from coming to church, and thou hast been guilty of the sin of preaching.
He wore outside a dogged look, as if fighting against some inward feeling; he entered looking down most perniciously at the floor.
In the case of truth, untrue beliefs work as perniciously in the long run as true beliefs work beneficially.
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.