riachtanach

Irish

Alternative forms

• riachdanach (obsolete)
• riachtánach, riachtanasach

Etymology

From riachtain +‎ -ach.

Adjective

riachtanach (genitive singular masculine riachtaigh, genitive singular feminine riachtanaí, plural riachtanacha, comparative riachtanaí)

1. necessary, essential, needful, indispensable, requisite

Declension

Declension of riachtanach

	Singular		Plural (m/f)
Positive	Masculine	Feminine	(strong noun)	(weak noun)
Nominative	riachtanach	riachtanach	riachtanacha
Vocative	riachtanaigh		riachtanacha
Genitive		riachtanaí	riachtanacha	riachtanach
Dative	riachtanach	riachtanach; riachtanaigh (archaic)	riachtanacha
Comparative	níos riachtanaí
Superlative	is riachtanaí

Related terms

• riachtanas

Further reading

• “riachtanach”, in Historical Irish Corpus, 1600–1926, Royal Irish Academy
• Gregory Toner, Sharon Arbuthnot, Máire Ní Mhaonaigh, Marie-Luise Theuerkauf, Dagmar Wodtko, editors (2019), “ríachtanach”, in eDIL: Electronic Dictionary of the Irish Language
• Dinneen, Patrick S. (1904) “riaċtanaċ”, in Foclóir Gaeḋilge agus Béarla, 1st edition, Dublin: Irish Texts Society, page 568
• Ó Dónaill, Niall (1977) “riachtanach”, in Foclóir Gaeilge–Béarla, Dublin: An Gúm, →ISBN