Where does “Wołk” come from?

Wołk (Polish) comes from Ukrainian вовк, from Old East Slavic вълкъ, from Proto-Slavic vьlkъ, from Proto-Balto-Slavic wilkás, from Proto-Indo-European wĺ̥kʷos — wolf.

Ancestry of “Wołk”, step by step

Wołk traces back through 3 separate lines of ancestry.

via Ukrainian вовк

StepLanguageWordMeaning
1Ukrainianвовкwolf
2Old East Slavicвълкъwolf
3Proto-Slavicvьlkъwolf
4Proto-Balto-Slavicwilkáswolf
5Proto-Indo-Europeanwĺ̥kʷoswolf

via Lower Sorbian wołk

StepLanguageWordMeaning
1Lower Sorbianwołk—
2Lower Sorbian-kused on masculine nouns to form a diminutive
3Proto-Slavic-ъkъForms diminutives from old u-stem nouns;...
4Proto-Slavic-kъDeverbal, forms token nouns; From expressive or...
5Proto-Indo-European-kosCreates deadjectival and desubstantival...

via Belarusian воўк

StepLanguageWordMeaning
1Belarusianвоўкwolf
Every word from Proto-Indo-European wĺ̥kʷos →Every word from Proto-Balto-Slavic wilkás →Every word from Proto-Slavic vьlkъ →