Where does “трудность” come from?

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

трудность (Russian): difficulty; obstacle, problem, trouble

Definitions

  1. difficulty; obstacle, problem, trouble

Ancestry of “трудность”, 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 →