árchú

Irish

Etymology

From Old Irish árchú.

Noun

árchú m or f (genitive singular árchon, nominative plural árchoin)

1. (literary) fierce dog, ‘warhound’
2. war-dog, warrior

Declension

Declension of árchú

Irregular

Bare forms Case Singular Plural Nominative árchú árchoin Vocative a árchú a árchoin Genitive árchon árchon Dative árchú árchoin

Forms with the definite article Case Singular Plural Nominative an t-árchú na hárchoin Genitive an árchon na n-árchon Dative leis an árchú don árchú leis na hárchoin

Alternative (feminine) declension

Declension of árchú

Irregular

Bare forms Case Singular Plural Nominative árchú árchoin Vocative a árchú a árchoin Genitive árchon árchon Dative árchú árchoin

Forms with the definite article Case Singular Plural Nominative an árchú na hárchoin Genitive na hárchon na n-árchon Dative leis an árchú don árchú leis na hárchoin

Mutation

Irish mutation
Radical	Eclipsis	with h-prothesis	with t-prothesis
árchú	n-árchú	hárchú	t-árchú
Note: Some of these forms may be hypothetical. Not every possible mutated form of every word actually occurs.

Further reading

• Ó Dónaill, Niall (1977) “árchú”, in Foclóir Gaeilge–Béarla, Dublin: An Gúm, →ISBN
• G. Toner, M. Ní Mhaonaigh, S. Arbuthnot, D. Wodtko, M.-L. Theuerkauf, editors (2019), “árchú”, in eDIL: Electronic Dictionary of the Irish Language
• Entries containing “árchú” in English-Irish Dictionary, An Gúm, 1959, by Tomás de Bhaldraithe.

Old Irish

Alternative forms

• archú

Etymology

From ár (“slaughter, carnage”) +‎ cú (“dog, hound”).

Noun

árchú n or m (genitive árchon)

1. war-hound, slaughter-hound
2. watchdog

Inflection

Masculine n-stem
	Singular	Dual	Plural
Nominative	árchú	árchoinL	árchoin
Vocative	árchú	árchoinL	árchonaH
Accusative	árchoinN	árchoinL	árchonaH
Genitive	árchon	árchonL	árchonN
Dative	árchoinL, árchúL	árchonaib	árchonaib
Initial mutations of a following adjective: H = triggers aspiration L = triggers lenition N = triggers nasalization

Mutation

Old Irish mutation
Radical	Lenition	Nasalization
árchú	unchanged	n-árchú
Note: Some of these forms may be hypothetical. Not every possible mutated form of every word actually occurs.

Further reading

• G. Toner, M. Ní Mhaonaigh, S. Arbuthnot, D. Wodtko, M.-L. Theuerkauf, editors (2019), “árchú”, in eDIL: Electronic Dictionary of the Irish Language