amaires

Old Irish

am- +‎ iress (“belief”)

amaires f (genitive amairise or amirisse, no plural)

unbelief, faithlessness
- c. 800–825, Diarmait, Milan Glosses on the Psalms, published in Thesaurus Palaeohibernicus (reprinted 1987, Dublin Institute for Advanced Studies), edited and with translations by Whitley Stokes and John Strachan, vol. I, pp. 7–483, Ml. 97^d10
  Is peccad díabul lesom .i. fodord doïb di dommatu, ⁊ du·fúairthed ní leu fora sáith din main, ⁊ todlugud inna féulæ ɔ amairis nánda·tibérad Día doïb, ⁊ nach coimnacuir ⁊ issi dano insin ind frescissiu co fochaid.
  It is a double sin in his opinion, i.e. the murmuring by them of want, although there remained some of the manna with them upon their satiety, and demanding the meat with faithlessness that God would not give it to them, and [even] that he could not; therefore that is the expectation with testing.
lack of belief (in a person), suspicion
doubt, disbelief, incredulity

Feminine ā-stem
	Singular	Dual	Plural
Nominative	amaires^L	—	—
Vocative	amaires^L	—	—
Accusative	amairis^N, amiris(s), amhiris	—	—
Genitive	amairise^H, amirisse	—	—
Dative	amairis^L, amiris(s), amhiris	—	—
Initial mutations of a following adjective: ^H = triggers aspiration ^L = triggers lenition ^N = triggers nasalization

Old Irish mutation
Radical	Lenition	Nasalization
amaires (pronounced with /h/ in h-prothesis environments)	unchanged	n-amaires
Note: Some of these forms may be hypothetical. Not every possible mutated form of every word actually occurs.