Reconstruction:Proto-Celtic/kʷetwariyos

This Proto-Celtic 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-Celtic

Etymology

From Proto-Indo-European *kʷetwr̥yós (“fourth”), from *kʷetwóres + *-yós. Equivalent to *kʷetwores +‎ *-yos.

Adjective

Proto-Celtic ordinal numbers

<  3rd	4th	5th  >
Cardinal : *kʷetwores     Ordinal : *kʷetwariyos

*kʷetwariyos

1. fourth

Inflection

O/ā-stem
masculine	singular	dual	plural
nominative	*kʷetwariyos	*kʷetwariyou	*kʷetwariyoi
vocative	*kʷetwariye	*kʷetwariyou	*kʷetwariyoi
accusative	*kʷetwariyom	*kʷetwariyou	*kʷetwariyoms
genitive	*kʷetwariyī	*kʷetwariyous	*kʷetwariyom
dative	*kʷetwariyūi	*kʷetwariyobom	*kʷetwariyobos
instrumental	*kʷetwariyū	*kʷetwariyobim	*kʷetwariyobis
feminine	singular	dual	plural
nominative	*kʷetwariyā	*kʷetwariyai	*kʷetwariyās
vocative	*kʷetwariyā	*kʷetwariyai	*kʷetwariyās
accusative	*kʷetwariyam	*kʷetwariyai	*kʷetwariyams
genitive	*kʷetwariyās	*kʷetwariyous	*kʷetwariyom
dative	*kʷetwariyai	*kʷetwariyābom	*kʷetwariyābos
instrumental	*?	*kʷetwariyābim	*kʷetwariyābis
neuter	singular	dual	plural
nominative	*kʷetwariyom	*kʷetwariyou	*kʷetwariyā
vocative	*kʷetwariyom	*kʷetwariyou	*kʷetwariyā
accusative	*kʷetwariyom	*kʷetwariyou	*kʷetwariyā
genitive	*kʷetwariyī	*kʷetwariyous	*kʷetwariyom
dative	*kʷetwariyūi	*kʷetwariyobom	*kʷetwariyobos
instrumental	*kʷetwariyū	*kʷetwariyobim	*kʷetwariyobis

Declension of the comparative
masculine	singular	dual	plural
nominative	*kʷetwariyyūs	*?	*kʷetwariyyoses
vocative	*kʷetwariyyūs	*?	*kʷetwariyyoses
accusative	*kʷetwariyyosam	*?	*kʷetwariyyosams
genitive	*kʷetwariyisos	*?	*kʷetwariyisom
dative	*kʷetwariyisei	*?	*kʷetwariyisbos
instrumental	*kʷetwariyisī	*?	*kʷetwariyisbis
feminine	singular	dual	plural
nominative	*kʷetwariyyūs	*?	*kʷetwariyyoses
vocative	*kʷetwariyyūs	*?	*kʷetwariyyoses
accusative	*kʷetwariyyosam	*?	*kʷetwariyyosams
genitive	*kʷetwariyisos	*?	*kʷetwariyisom
dative	*kʷetwariyisei	*?	*kʷetwariyisbos
instrumental	*kʷetwariyisī	*?	*kʷetwariyisbis
neuter	singular	dual	plural
nominative	*kʷetwariyis	*?	*?
vocative	*kʷetwariyis	*?	*?
accusative	*kʷetwariyis	*?	*?
genitive	*kʷetwariyisos	*?	*kʷetwariyisom
dative	*kʷetwariyisei	*?	*kʷetwariyisbos
instrumental	*kʷetwariyisī	*?	*kʷetwariyisbis

Descendants

• Brythonic: *pėdwėrɨð
  • Old Breton: petguare
    • Middle Breton: peuare, pevare
      • Breton: pevare
  • Middle Cornish: pyswere, peswere
    • Cornish: peswora, pajwora
  • Old Welsh: petguaret
    • Middle Welsh: pedweryd
      • Welsh: pedwerydd
• Old Irish: cethramad
  • Irish: ceathrú
  • Manx: kerroo, kiarroo
  • Scottish Gaelic: ceathramh
• Gaulish: petuarios