Where does “необязательность” come from?

необязательность (Russian) comes from Russian необяза́тельный, from Russian не-, from Russian не, from Proto-Slavic ne, from Proto-Balto-Slavic nē, from Proto-Indo-European né — not; no.

необязательность (Russian): optionalness, optionality, non-necessity

Definitions

  1. optionalness, optionality, non-necessity

Ancestry of “необязательность”, step by step

StepLanguageWordMeaning
1Russianнеобяза́тельныйnot obligatory, optional
2Russianне-un-, non-, in-, im-, ir-, dis-, mis-
3Russianнеnot, no, -n't, without; Idiomatic negative usage;...
4Proto-Slavicnenot
5Proto-Balto-Slavicnēnot
6Proto-Indo-Europeannénot; no
Every word from Proto-Indo-European né →Every word from Russian не- →Every word from Proto-Balto-Slavic nē →