déach

déach

See also: deach

Irish

Etymology 1

From dé- + -ach.

Adjective

déach (genitive singular masculine déach, genitive singular feminine déiche, plural déacha, not comparable)

1. dual

   Synonyms: dé-, dúbailte

2. (grammar) dual

Declension

Declension of déach

	Singular		Plural (m/f)
Positive	Masculine	Feminine	(strong noun)	(weak noun)
Nominative	déach	dhéach	déacha; dhéacha²
Vocative	dhéach		déacha
Genitive		déiche	déacha	déach
Dative	déach; dhéach¹	dhéach	déacha; dhéacha²
Comparative	(not comparable)
Superlative	(not comparable)

¹ When the preceding noun is lenited and governed by the definite article.
² When the preceding noun ends in a slender consonant.

Noun

déach m (genitive singular déigh, nominative plural déigh)

1. (grammar) dual

Declension

Declension of déach

First declension

Bare forms: Case Singular Plural Nominative déach déigh Vocative a dhéigh a dhéacha Genitive déigh déach Dative déach déigh

Forms with the definite article: Case Singular Plural Nominative an déach na déigh Genitive an déigh na ndéach Dative leis an déach don déach leis na déigh

Noun

déach m (genitive singular déich, nominative plural déich)

1. (music) second

Declension

Declension of déach

First declension

Bare forms: Case Singular Plural Nominative déach déich Vocative a dhéich a dhéacha Genitive déich déach Dative déach déich

Forms with the definite article: Case Singular Plural Nominative an déach na déich Genitive an déich na ndéach Dative leis an déach don déach leis na déich

Etymology 2

See the etymology of the corresponding lemma form.

Verb

déach

1. Alternative spelling of d'fhéach

Mutation

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

Further reading

• Ó Dónaill, Niall (1977), “déach”, in Foclóir Gaeilge–Béarla, Dublin: An Gúm, →ISBN
• Entries containing “déach” in English-Irish Dictionary, An Gúm, 1959, by Tomás de Bhaldraithe.
• Entries containing “déach” in New English-Irish Dictionary by Foras na Gaeilge.