Where does “вогнеборець” come from?

вогнеборець (Ukrainian) comes from Ukrainian вогонь, from Russian огонь, from Old East Slavic огнь, from Proto-Slavic ogňь, from Proto-Balto-Slavic ungnis, from Proto-Indo-European h₁n̥gʷnis, from Proto-Indo-European h₁engʷ- — to burn; fire.

Ancestry of “вогнеборець”, step by step

вогнеборець traces back through two separate lines of ancestry.

via Ukrainian вогонь

StepLanguageWordMeaning
1Ukrainianвогоньfire; hearth, fireplace; sunlight
2Russianогоньfire; light; weapons fire
3Old East Slavicогньfire
4Proto-Slavicogňьfire
5Proto-Balto-Slavicungnisfire
6Proto-Indo-Europeanh₁n̥gʷnisfire
7Proto-Indo-Europeanh₁engʷ-to burn; fire

via Ukrainian бо́рець

StepLanguageWordMeaning
1Ukrainianбо́рецьwrestler
Every word from Proto-Indo-European h₁engʷ-Every word from Proto-Indo-European h₁n̥gʷnisEvery word from Proto-Balto-Slavic ungnis