Reconstruction:Proto-Slavic/bľuzgati

From *bľuti (“to gush, to vomit”) +‎ *-zgati, from Proto-Indo-European *bʰlewH- (“to overflow, to gush”). Possibly stretching back to Proto-Balto-Slavic *bljauzgāˀtei, with cognates Lithuanian bliauzgóti (“to rattle, to babble”), Latvian blauzgêt (“to rattle, to babble”). Further akin to Lithuanian bliaũkšti (“to babble”), Lithuanian blùzginti (“to echo”), Latvian blūžgêt (“to splash”) within Balto-Slavic and to Ancient Greek φλύζω (phlúzō, “to boil up, to gush”), possibly German plauschen (“to blab, to chatter”) within Indo-European.

According to Trubachev, of onomatopoeic origin.

*bľuzgati impf (perfective *bľuzgnǫti)

1. to jet, to gush
2. to slush, to splatter
3. (figurative) to swear, to curse, to mumble

• *bľьvati (“to puke, to vomit”)
• *bľukati (“to gush, to erupt”)

• East Slavic:
  • Russian: блю́згать (bljúzgatʹ)
  • ⇒ Ukrainian: блюзну́ти (bljuznúty)
• South Slavic:
  • Serbo-Croatian:

    Cyrillic script: бљу̏згати

    Latin script: bljȕzgati

  • Slovene: bljȗzgati
• West Slavic:
  • Polish: bluzgać

• Vasmer, Max (1964–1973) “блю́згать”, in Oleg Trubachyov, transl., Этимологический словарь русского языка [Etymological Dictionary of the Russian Language] (in Russian), Moscow: Progress
• Trubachyov, Oleg, editor (1975), “*bľuzgati”, in Этимологический словарь славянских языков [Etymological dictionary of Slavic languages] (in Russian), numbers 2 (*bez – *bratrъ), Moscow: Nauka, page 139