Where does “порочность” come from?

порочность (Russian) comes from Russian -ость, from Proto-Slavic -ostь — Used with adjectival stems to form abstract...

порочность (Russian): depravity, viciousness; fallaciousness

Definitions

  1. depravity, viciousness; fallaciousness

Ancestry of “порочность”, step by step

StepLanguageWordMeaning
1Russian-ость-ness, -ity
2Proto-Slavic-ostьUsed with adjectival stems to form abstract...
Every word from Proto-Slavic -ostь →Every word from Russian -ость →