< Reconstruction:Proto-Slavic

Reconstruction:Proto-Slavic/bojьkъ

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

Proto-Slavic

Etymology

Form an earlier u-stem adjective *bojъ +‎ *-ьkъ, from Proto-Indo-European *bʰeyh₂- (“to fight”). Formally equivalent to Lithuanian bajùs (“terrible”)[1], which is from the same PIE root but from another meaning to frighten (whence are Proto-Slavic *bojati (“to fear”), *bojaznь (“fear”)). The later is attested relatively late, though.

Adjective

*bojьkъ

  1. feisty, ready for fight
  2. brisky, energetic

Inflection
Indefinite declension of *bojьkъ (hard)
Singular Masculine Feminine Neuter
Nominative **bojьkъ **bojьka **bojьko
Accusative **bojьkъ **bojьkǫ **bojьko
Genitive **bojьka **bojьky **bojьka
Locative **bojьcě **bojьcě **bojьcě
Dative **bojьku **bojьcě **bojьku
Instrumental **bojьkomь **bojьkojǫ **bojьkomь
Vocative **bojьče **bojьko **bojьko
Dual Masculine Feminine Neuter
Nominative **bojьka **bojьcě **bojьcě
Accusative **bojьka **bojьcě **bojьcě
Genitive **bojьku **bojьku **bojьku
Locative **bojьku **bojьku **bojьku
Dative **bojьkoma **bojьkama **bojьkoma
Instrumental **bojьkoma **bojьkama **bojьkoma
Vocative **bojьka **bojьcě **bojьcě
Plural Masculine Feminine Neuter
Nominative **bojьci **bojьky **bojьka
Accusative **bojьky **bojьky **bojьka
Genitive **bojьkъ **bojьkъ **bojьkъ
Locative **bojьcěxъ **bojьkaxъ **bojьcěxъ
Dative **bojьkomъ **bojьkamъ **bojьkomъ
Instrumental **bojьky **bojьkami **bojьky
Vocative **bojьci **bojьky **bojьka
Definite declension of *bojьkъ (hard)
Singular Masculine Feminine Neuter
Nominative **bojьkъjь **bojьkaja **bojьkoje
Accusative **bojьkъjь **bojьkǫjǫ **bojьkoje
Genitive **bojьkajego **bojьkyję **bojьkajego
Locative **bojьcějemь **bojьcěji **bojьcějemь
Dative **bojьkujemu **bojьcěji **bojьkujemu
Instrumental **bojьkyjimi **bojьkǫjǫ **bojьkyjimi
Vocative **bojьkъjь **bojьkaja **bojьkoje
Dual Masculine Feminine Neuter
Nominative **bojьkaja **bojьcěji **bojьcěji
Accusative **bojьkaja **bojьcěji **bojьcěji
Genitive **bojьkuju **bojьkuju **bojьkuju
Locative **bojьkuju **bojьkuju **bojьkuju
Dative **bojьkyjima **bojьkyjima **bojьkyjima
Instrumental **bojьkyjima **bojьkyjima **bojьkyjima
Vocative **bojьkaja **bojьcěji **bojьcěji
Plural Masculine Feminine Neuter
Nominative **bojьciji **bojьkyję **bojьkaja
Accusative **bojьkyję **bojьkyję **bojьkaja
Genitive **bojьkъjixъ **bojьkъjixъ **bojьkъjixъ
Locative **bojьkyjixъ **bojьkyjixъ **bojьkyjixъ
Dative **bojьkyjimъ **bojьkyjimъ **bojьkyjimъ
Instrumental **bojьkyjimi **bojьkyjimi **bojьkyjimi
Vocative **bojьciji **bojьkyję **bojьkaja

Descendants
  • East Slavic:
    • Russian: бо́йкий (bójkij)
    • Ukrainian: бійкий (bijkyj)
  • South Slavic:
    • Bulgarian: бояк (bojak)
      • ⇒ Bulgarian: бойко (bojko, “bravely, energetically”) (adverb)
    • Serbo-Croatian:
      Cyrillic: бо̀јак
      Latin: bòjak

References
  1. Derksen, Rick (2015), “bajus”, in Etymological Dictionary of the Baltic Inherited Lexicon (Leiden Indo-European Etymological Dictionary Series; 13), Leiden, Boston: Brill, →ISBN, page 77
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