Reconstruction:Proto-Slavic/poňevaže

Univerbation of *poňe +‎ *va +‎ *že.

*poňevaže^[1]

1. because, since

• East Slavic:
  • Old East Slavic: поневаже (ponevaže)
    • Old Ruthenian: поневажъ (ponevaž), поневажь (ponevažʹ)
      • Ukrainian: понева́ж (poneváž), поніваж (ponivaž), поневач (ponevač) (dialectal, obsolete)
• South Slavic:
  • Serbo-Croatian:

    Cyrillic script: (archaic) поњеваре

    Latin script: (archaic) ponjevare

• West Slavic:
  • Old Czech: poněvadž, poňavadž, ponivadž, poňovadž, poňadž, poňaž, ponidž, poniž, poňažd, poněvač, ponvěž, poněvad
    • Czech: poněvadž
      • → Silesian: pōniywŏż
        • → Polish: ponieważ, poniewadz, poniewadż (Middle Polish)
      • → Slovak: poneváč

• Erhart, Adolf, editor (2002), “ponje”, in Etymologický slovník jazyka staroslověnského [Etymological Dictionary of the Old Church Slavonic Language] (in Czech), numbers 11 (patrachъ – -pǫditi), Prague: Academia, →ISBN, page 682
• Rejzek, Jiří (2001) “poněvadž”, in Český etymologický slovník [Czech Etymological Dictionary] (in Czech), 1st edition, Voznice: LEDA, →ISBN, page 487
• Boryś, Wiesław (2005) “ponieważ”, in Słownik etymologiczny języka polskiego (in Polish), Kraków: Wydawnictwo Literackie, →ISBN, page 462
• Melnychuk, O. S., editor (1982–2012), “понеже”, in Етимологічний словник української мови [Etymological Dictionary of the Ukrainian Language] (in Ukrainian), Kyiv: Naukova Dumka
• Václav Machek (1968) “poněvadž”, in Etymologický slovník jazyka českého [Etymological Dictionary of the Czech Language], 2nd edition, Prague: Academia, page 471
• Vasmer, Max (1964–1973) “понеже”, in Oleg Trubachyov, transl., Этимологический словарь русского языка [Etymological Dictionary of the Russian Language] (in Russian), Moscow: Progress