heddiw

• heddi, heddu, heddy (Dyfed)
• heiddiw (Gwynedd)
• heddyw (obsolete)

From Proto-Celtic *so (“this”) + *dīyos (“day”); compare Breton hiziv/hiziw (from Middle Breton hizio), Cornish hedhyw; Latin hodiē.

• (North Wales) IPA^(key): /ˈhɛðɪu̯/
• (South Wales, standard, colloquial) IPA^(key): /ˈheːðɪu̯/, /ˈhɛðɪu̯/
  • (South Wales, colloquial) IPA^(key): /ˈheːði/, /ˈhɛði/
• (Powys) IPA^(key): /ˈhɛðjʊ/

heddiw

1. today

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