Where does “фак” come from?

фак (Russian) comes from English fuck, from Middle English fukken, from Old Norse fukka, from Proto-Germanic fukkōną, from Proto-Indo-European pewǵ- — to punch, fist-fight; to prick, poke, stab.

фак (Russian): college, school, department; API •  m inan; the...

Definitions

  1. college, school, department; API •  m inan; the...

Ancestry of “фак”, step by step

фак traces back through two separate lines of ancestry.

via English fuck

StepLanguageWordMeaning
1EnglishfuckTo have sexual intercourse, to copulate; To have...
2Middle Englishfukkento fuck; to beat, strike
3Old Norsefukka
4Proto-Germanicfukkōnąto blow, gust; to strike, assail; to copulate
5Proto-Indo-Europeanpewǵ-to punch, fist-fight; to prick, poke, stab

via Russian факульте́т

StepLanguageWordMeaning
1Russianфакульте́тfaculty division of a university
2GermanFakultätfactorial; faculty, school
3Latinfacultāsability to do any thing easily, skill, capacity, power
4Proto-Italicfakelitāts
Every word from Proto-Indo-European pewǵ-Every word from Proto-Germanic fukkōnąEvery word from Old Norse fukka