ainbhios

Irish

From Old Irish ainfis m, ainbhes m (“ignorance”).^[1] By surface analysis, ain- +‎ fios (“knowledge”).

ainbhios m (genitive singular ainbheasa)

Declension of ainbhios (third declension, no plural)

forms with the definite article
case	singular
nominative	an t-ainbhios
genitive	an ainbheasa
dative	leis an ainbhios don ainbhios

Mutated forms of *ainbhios*
radical	eclipsis	with h-prothesis	with t-prothesis
ainbhios	n-ainbhios	hainbhios	not applicable

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), “ainfis”, in eDIL: Electronic Dictionary of the Irish Language
^ Finck, F. N. (1899) Die araner mundart [The Aran Dialect] (in German), volume II, Marburg: Elwert’sche Verlagsbuchhandlung, page 25
^ Quiggin, E. C. (1906) A Dialect of Donegal, Cambridge University Press, § 325, page 113