Where does “искренность” come from?

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

искренность (Russian): sincerity, candour, frankness

Definitions

  1. sincerity, candour, frankness

Ancestry of “искренность”, 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 →