Where does “ошибочность” come from?

ошибочность (Russian) comes from Russian оши́бочный, from Russian оши́бка, from Russian ошиба́ться, from Russian ошиби́ться, from Russian -ся, from Old East Slavic сѧ, from Proto-Slavic sę, from Proto-Balto-Slavic *sen — self.

ошибочность (Russian): erroneousness, incorrectness, fallaciousness, mistakenness

Definitions

  1. erroneousness, incorrectness, fallaciousness, mistakenness

Ancestry of “ошибочность”, step by step

StepLanguageWordMeaning
1Russianоши́бочныйerroneous, mistaken, fallacious
2Russianоши́бкаmistake, error, fault
3Russianошиба́тьсяto make a mistake, to err
4Russianошиби́тьсяto make a mistake, to err
5Russian-сяReflexive suffix appended to finite verbs and...
6Old East Slavicсѧ
7Proto-Slaviconeself: myself, yourself, himself, herself,...
8Proto-Balto-Slavic*senoneself
9Proto-Indo-Europeanswéself
Every word from Proto-Indo-European swéEvery word from Russian -сяEvery word from Proto-Balto-Slavic *sen