Where does “perniciousness” come from?

perniciousness (English) comes from English pernicious, from Old French pernicios, from French pernicieux, from Latin perniciōsus, from Latin perniciēs, from Latin pernecō, from Latin necō, from Latin nex — to perish, disappear.

perniciousness (English): The condition of being pernicious;...

Definitions

  1. The condition of being pernicious;...

Ancestry of “perniciousness”, step by step

StepLanguageWordMeaning
1EnglishperniciousCausing much harm in a subtle way; Causing death...
2Old Frenchpernicios
3FrenchpernicieuxInsidious. Having a slow and discreet, but...
4Latinperniciōsusdestructive, ruinous, baleful, pernicious
5Latinperniciēsruin, destruction
6Latinpernecōto kill, slay outright
7Latinnecōto kill, murder (especially without physical wounding such as by poison or hunger)
8Latinnexmurder, slaughter, killing; violent death
9Proto-Italicneksdeath, slaughter
10Proto-Indo-Europeanneḱsdeath
11Proto-Indo-Europeanneḱ-to perish, disappear
Every word from Proto-Indo-European neḱ-Every word from Proto-Indo-European neḱsEvery word from Proto-Italic neks
perniciousness — Etymology, Origin & Word History | Etymology Explorer