Where does “первостепенный” come from?

первостепенный (Russian) comes from Russian сте́пень, from Proto-Slavic *stepy — step?, stair?.

первостепенный (Russian): paramount

Definitions

  1. paramount

Ancestry of “первостепенный”, step by step

первостепенный traces back through two separate lines of ancestry.

via Russian сте́пень

StepLanguageWordMeaning
1Russianсте́пеньdegree
2Proto-Slavic*stepystep?, stair?

via Russian пе́рвый

StepLanguageWordMeaning
1Russianпе́рвыйfirst
Every word from Proto-Slavic *stepyEvery word from Russian сте́пень