Where does “упорно” come from?

упорно (Russian) comes from Russian упо́рный, from Russian -ный, from Old Church Slavonic -ьнъ, from Proto-Slavic -ьnъ — -ish, -ic, -al, -ed; From adjectives.

упорно (Russian): hard

Definitions

  1. hard

Ancestry of “упорно”, step by step

StepLanguageWordMeaning
1Russianупо́рныйpersistent, insistent
2Russian-ный-ish, -ic, -al, -ed
3Old Church Slavonic-ьнъish, -ic, -al, -ed
4Proto-Slavic-ьnъ-ish, -ic, -al, -ed; From adjectives
Every word from Proto-Slavic -ьnъ →Every word from Russian -ный →Every word from Old Church Slavonic -ьнъ →