Where does “неприступный” come from?

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

неприступный (Russian): inaccessible, unapproachable, forbidding;...

Definitions

  1. inaccessible, unapproachable, forbidding;...

Ancestry of “неприступный”, step by step

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