< 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
genitive **bojьka **bojьky **bojьka
dative **bojьku **bojьcě **bojьku
accusative **bojьkъ **bojьkǫ **bojьko
instrumental **bojьkomь **bojьkojǫ **bojьkomь
locative **bojьcě **bojьcě **bojьcě
vocative **bojьče **bojьko **bojьko
dual masculine feminine neuter
nominative **bojьka **bojьcě **bojьcě
genitive **bojьku **bojьku **bojьku
dative **bojьkoma **bojьkama **bojьkoma
accusative **bojьka **bojьcě **bojьcě
instrumental **bojьkoma **bojьkama **bojьkoma
locative **bojьku **bojьku **bojьku
vocative **bojьka **bojьcě **bojьcě
plural masculine feminine neuter
nominative **bojьci **bojьky **bojьka
genitive **bojьkъ **bojьkъ **bojьkъ
dative **bojьkomъ **bojьkamъ **bojьkomъ
accusative **bojьky **bojьky **bojьka
instrumental **bojьky **bojьkami **bojьky
locative **bojьcěxъ **bojьkaxъ **bojьcěxъ
vocative **bojьci **bojьky **bojьka
Definite declension of *bojьkъ (hard)
singular masculine feminine neuter
nominative **bojьkъjь **bojьkaja **bojьkoje
genitive **bojьkajego **bojьkyję̇ **bojьkajego
dative **bojьkujemu **bojьcěji **bojьkujemu
accusative **bojьkъjь **bojьkǫjǫ **bojьkoje
instrumental **bojьkyjimь **bojьkǫjǫ **bojьkyjimь
locative **bojьcějemь **bojьcěji **bojьcějemь
vocative **bojьkъjь **bojьkaja **bojьkoje
dual masculine feminine neuter
nominative **bojьkaja **bojьcěji **bojьcěji
genitive **bojьkuju **bojьkuju **bojьkuju
dative **bojьkyjima **bojьkyjima **bojьkyjima
accusative **bojьkaja **bojьcěji **bojьcěji
instrumental **bojьkyjima **bojьkyjima **bojьkyjima
locative **bojьkuju **bojьkuju **bojьkuju
vocative **bojьkaja **bojьcěji **bojьcěji
plural masculine feminine neuter
nominative **bojьciji **bojьkyję̇ **bojьkaja
genitive **bojьkъjixъ **bojьkъjixъ **bojьkъjixъ
dative **bojьkyjimъ **bojьkyjimъ **bojьkyjimъ
accusative **bojьkyję̇ **bojьkyję̇ **bojьkaja
instrumental **bojьkyjimi **bojьkyjimi **bojьkyjimi
locative **bojьkyjixъ **bojьkyjixъ **bojьkyjixъ
vocative **bojьciji **bojьkyję̇ **bojьkaja

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