Reconstruction:Proto-Celtic/swesūr

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 *swésōr.

Noun

*swesūr f

sister

Declension

Masculine/feminine consonant stem
	singular	dual	plural
nominative	*swesūr	*swesre	*swesres
vocative	*swesūr	*swesre	*swesres
accusative	*swesram	*swesre	*swesrans
genitive	*swesros	*swesrou	*swesrom
dative	*swesrei	*swesrobom	*swesrobos
locative	*swesri	—	—
instrumental	*swesre?	*swesrobim	*swesrobis

Descendants

Proto-Brythonic: *hwoɨr
- Old Breton: guoer
  - Middle Breton: hoer
    - Breton: c'hoar
- Old Cornish: huir
  - Cornish: hwor
- Middle Welsh: chwaer
  - Welsh: chwaer
Old Irish: siur
- Irish: siúr
- Manx: shuyr
- Scottish Gaelic: piuthar (back-formed from lenited form fiur, phiur)
- ⇒ Middle Irish: derbṡiur
  - Irish: deirfiúr
Gaulish: suiorebe (instrumental plural)

References

Matasović, Ranko (2009), Etymological Dictionary of Proto-Celtic (Leiden Indo-European Etymological Dictionary Series; 9), Leiden: Brill, →ISBN, page 364
Peter C. H. Schrijver (1995), Studies in British Celtic Historical Phonology (Leiden Studies in Indo-European; 5), Amsterdam; Atlanta, Ga.: Rodopi, page 388.