ionnas

Irish

From Old Irish indas (“manner, method”) (maybe originally a verbal noun of in·fét),^[1]^[2] from Proto-Celtic *ande-wissu (compare fios).^[3] Doublet of ionas.

ionnas m (genitive singular ionnais, nominative plural ionnais) (literary)

Declension of ionnas (first declension)

forms with the definite article
case	singular	plural
nominative	an t-ionnas	na hionnais
genitive	an ionnais	na n-ionnas
dative	leis an ionnas don ionnas	leis na hionnais

Mutated forms of *ionnas*
radical	eclipsis	with h-prothesis	with t-prothesis
ionnas	n-ionnas	hionnas	t-ionnas

Note: Certain mutated forms of some words can never occur in standard Modern Irish.
All possible mutated forms are displayed for convenience.

^ Gregory Toner, Sharon Arbuthnot, Máire Ní Mhaonaigh, Marie-Luise Theuerkauf, Dagmar Wodtko, editors (2019), “indas”, in eDIL: Electronic Dictionary of the Irish Language
^ Gordon, Randall Clark (2012) Derivational Morphology of the Early Irish Verbal Noun, Los Angeles: University of California, 3.1.46, page 227
^ Pedersen, Holger (1913) Vergleichende Grammatik der keltischen Sprachen [Comparative Grammar of the Celtic Languages] (in German), volume II, Göttingen: Vandenhoeck und Ruprecht, →ISBN, page 520
^ Sjoestedt, M. L. (1931) Phonétique d’un parler irlandais de Kerry [Phonetics of an Irish Dialect of Kerry] (in French), Paris: Librairie Ernest Leroux, page 85