From Wiktionary, the free dictionary
Jump to navigation Jump to search





From Middle Welsh diwarnawt, borrowed from Vulgar Latin or Medieval Latin diurnāta (a day’s work, a day’s journey, a fixed day, a day), from Latin diurnus (daily), from diēs (day). Doublet of siwrnai.





diwrnod m (plural diwrnodau)

  1. a day (period of 24 hours)

Usage notes

  • Diwrnod is countable and refers to an individual day and so is the word used when employing a qualifying numeral or adjective. It sits in contrast to the word noson (night, evening). (cf. French journée, Italian giornata)
diwrnod gwycha great day
tri diwrnodthree days
  • Dydd, on the other hand, generally refers to the uncoutable period of light. Dydd is also used with the names days of the week and with holiday and festival names. It is therefore the opposite of nos (night, evening). (cf. French jour, Italian giorno)
yn ystod y dyddduring the day(time)
dydd WenerFriday day(time)
Dydd CalanNew Year's Day


  • dydd (day (as opposed to night))


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