Reconstruction:Proto-Slavic/xujь

From Proto-Balto-Slavic *skaujás, from Proto-Indo-European *skowy-ós, from *skowy-, from *skwey- (“needle, prickle, thorn”).

Compare Albanian hu (“stake, pole; penis”) (from Proto-Albanian *skuna < *skuja + *-na, from Proto-Indo-European *skowy-ós).

*xȗjь m

1. (originally) stiff part of a plant (twig, shoot)
2. penis

• *xvoja / *xvojь (“needles or branches of a coniferous tree”)

• *xujòvъ (“shitty”)
• *xujьňà (“shit, crap”)

• East Slavic:
  • Old East Slavic: хуи (xui)
    • Old Ruthenian: *хуй
      • Belarusian: хуй (xuj)
      • Rusyn: хуй (xuj)
      • Ukrainian: хуй (xuj)
    • Russian: хуй (xuj)
• South Slavic:
  • Bulgarian: хуй (huj)
• West Slavic:
  • Kashubian: chùj
  • Old Polish: *chuj, Chuj (proper noun)
    • ⇒ Old Polish: Łupichuj (proper noun)
    • Polish: chuj, huj
      • → Czech: chuj
      • →? Slovak: chuj
    • Silesian: chuj

• Trubachyov, Oleg, editor (1981), “*xujь”, in Этимологический словарь славянских языков [Etymological Dictionary of Slavic Languages] (in Russian), issue 8 (*xa – *jьvьlga), Moscow: Nauka, page 114
• Melnychuk, O. S., editor (2012), “хуй”, in Етимологічний словник української мови [Etymological Dictionary of the Ukrainian Language] (in Ukrainian), volume 6 (У – Я), Kyiv: Naukova Dumka, →ISBN, page 221
• Rudnyc'kyj, Ja. (1972–1982), “хуй”, in An Etymological Dictionary of the Ukrainian Language, volume 2 (Д – Ь), issue 12–22, Ottawa: Ukr. Mohylo-Mazepian Acad. of Sci. & Ukr. Lang. Assoc., →LCCN, page 1091
• Vasmer, Max (1958), “ху́й”, in Russisches Etymologisches Wörterbuch [Russian Etymological Dictionary] (Indogermanische Bibliothek; 2) (in German), volume 3 (Sta – Ÿ), Heidelberg: Universitätsverlag Carl Winter, →ISBN, page 277