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Etymology 1[edit]

Proper noun[edit]

  1. genitive singular of Dia

Etymology 2[edit]

Originally the dative of dia (day).


(with genitive; triggers h-prothesis of a following vowel)

  1. on (used only with the names of the days of the week)
    Domhnaigh ― on Sunday
Usage notes[edit]

is not used with Déardaoin (Thursday), which by itself is both the noun “Thursday” and the adverb “on Thursday”.

Derived terms[edit]


Irish mutation
Radical Lenition Eclipsis
Dhé nDé
Note: Some of these forms may be hypothetical. Not every
possible mutated form of every word actually occurs.