Arth Fwyaf

From yr (“the”) +‎ arth (“bear”) +‎ fwyaf (“biggest, greatest”), "the greater bear, Ursa Major".

• (North Wales, standard) IPA^(key): /ˌarθ ˈvʊɨ̯.av/
  • (North Wales, colloquial) IPA^(key): /ˌarθ ˈvʊɨ̯.a/
• (South Wales, standard) IPA^(key): /ˌarθ ˈvʊi̯.av/
  • (South Wales, colloquial) IPA^(key): /ˌarθ ˈvʊi̯.a/

yr Arth Fwyaf f

1. (literary) Ursa Major, the Great Bear

   Synonyms: Arad, Arth Fawr, Haeddel, Haeddel Fawr, Jac a'i Wagen, Llong Foel, Llong Noa, Llun y Llong, Llun yr Haeddel, Men Siarl, Men Siarlmaen, Men Siarlys, Saith Seren, Sêr Llong, Sosban

• R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke et al., editors (1950–present), “Arth Fwyaf”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies