Etymology 1Edit

From Proto-Celtic *wegrom, possibly from Proto-Indo-European *h₂weg- (increase, enlarge) via a sense ‘outgrowth’.[1] Cognate with Cornish gora and Old Irish fér (grass).


gwair m (plural gweiriau)

  1. grass
    Synonym: glaswellt
  2. hay
Derived termsEdit

Etymology 2Edit


gwair m (uncountable)

  1. bend, curve, ring

Usage notesEdit

This word is only found in compounds (see below).

Derived termsEdit


Welsh mutation
radical soft nasal aspirate
gwair wair ngwair unchanged
Note: Some of these forms may be hypothetical. Not every
possible mutated form of every word actually occurs.


  1. ^ Matasović, Ranko (2009) Etymological Dictionary of Proto-Celtic (Leiden Indo-European Etymological Dictionary Series; 9), Leiden: Brill, →ISBN, page 409
  • R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke et al., editors (1950–present) , “gwair”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies