díliu

See also: diliu

Old Irish

Borrowed from Latin dīluvium.[1] The n-stem inflection is analogical.

It was soon conflated with the etymologically unrelated díle, for which compare Old Irish liae and Welsh lliant from *liyants, Welsh dillydd from *dī-exs-liyo-, and Old Irish lín (“multitude”) from *līnom (“flood”), all ultimately from Proto-Indo-European *leyH- (“flow, flood”) (compare Old Church Slavonic лити (liti, “to pour”), Lithuanian líeti).

díliu f (genitive dílenn or dílend, nominative plural dílinn or dílind)

flood, deluge
- c. 800–825, Diarmait, Milan Glosses on the Psalms, published in Thesaurus Palaeohibernicus (reprinted 1987, Dublin Institute for Advanced Studies), edited and with translations by Whitley Stokes and John Strachan, vol. I, pp. 7–483, Ml. 62^b20
  a n-imbed són ind slóig do·lega na ní téte, fo chosmailius dílenn
  the abundance of the army which destroys whatever it comes to, like a deluge

Feminine n-stem
	Singular	Dual	Plural
Nominative	díliu	dílinn^L, dílind	dílinn
Vocative	díliu	dílinn^L, dílind	dílenna^H, dílenda
Accusative	dílinn^N, dílind	dílinn^L, dílind	dílenna^H, dílenda
Genitive	dílenn, dílend	dílenn^L, dílend	dílenn^N
Dative	dílinn^L, díliu^L, díle	dílennaib, dílendaib	dílennaib, dílendaib
Initial mutations of a following adjective: ^H = triggers aspiration ^L = triggers lenition ^N = triggers nasalization

Old Irish mutation
Radical	Lenition	Nasalization
díliu	díliu pronounced with /ð(ʲ)-/	ndíliu
Note: Some of these forms may be hypothetical. Not every possible mutated form of every word actually occurs.

Pedersen, Holger (1909) Vergleichende Grammatik der keltischen Sprachen (in German), volume I, Göttingen: Vandenhoeck und Ruprecht, →ISBN, page 197