Where does “непроглядный” come from?

непроглядный (Russian) comes from Russian прогляде́ть, from Russian про́-, from Proto-Slavic pro-, from Proto-Slavic *pro, from Proto-Balto-Slavic *pra, from Proto-Indo-European pró, from Proto-Indo-European per-, from Proto-Indo-European pr̥tós — passed , crossed.

непроглядный (Russian): pitch-black

Definitions

  1. pitch-black

Ancestry of “непроглядный”, step by step

StepLanguageWordMeaning
1Russianпрогляде́тьto look (through), to skim
2Russianпро́-through, past describing an action of passing through a space or an object
3Proto-Slavicpro-pro-, for-, through
4Proto-Slavic*profor
5Proto-Balto-Slavic*pra
6Proto-Indo-Europeanprótoward, leading to
7Proto-Indo-Europeanper-before, in front; first; to go through
8Proto-Indo-Europeanpr̥tóspassed , crossed
Every word from Proto-Indo-European pr̥tósEvery word from Proto-Indo-European per-Every word from Proto-Indo-European pró