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This Proto-Slavic entry contains reconstructed words and roots. As such, the term(s) in this entry are not directly attested, but are hypothesized to have existed based on comparative evidence.



From Proto-Indo-European *bʰoyh₂ós, from *bʰeyh₂- (to strike, hew).


*bòjь or *bȍjь m[1]

  1. battle, fight
    Synonym: *bitva


Related terms[edit]

Derived terms[edit]


  • Church Slavonic: бои (boi)
  • East Slavic:
  • South Slavic:
  • West Slavic:
    • Czech: boj
    • Polish: bój
    • Slovak: boj
    • Sorbian:
      • Upper Sorbian: [Term?]
      • Lower Sorbian: bój

Further reading[edit]

  • Vasmer, Max (1964–1973), “бой”, in Etimologičeskij slovarʹ russkovo jazyka [Etymological Dictionary of the Russian Language] (in Russian), translated from German and supplemented by Trubačóv O. N., Moscow: Progress
  • Černyx, P. Ja. (1999), “бой”, in Istoriko-etimologičeskij slovarʹ russkovo jazyka [Historical-Etymological Dictionary of the Russian Language] (in Russian), volume 1, 3rd reprint edition, Moscow: Russkij jazyk, page 100
  • Trubačev O. N., editor (1975), “*bojь”, in Etimologičeskij slovarʹ slavjanskix jazykov [Etymological dictionary of Slavic languages] (in Russian), volume 02, Moscow: Nauka, page 167
  • Šanskij, N. M. (2004), “бой”, in Školʹnyj etimologičeskij slovarʹ russkovo jazyka [School Etymological Dictionary of the Russian Language] (in Russian), Moscow: Drofa


  1. ^ Derksen, Rick (2008), “*bojь”, in Etymological Dictionary of the Slavic Inherited Lexicon (Leiden Indo-European Etymological Dictionary Series; 4), Leiden, Boston: Brill, →ISBN, page 51