optach

Irish

Etymology

From Medieval Latin opticus, from Ancient Greek ὀπτικός (optikós, “of seeing”). Partially calqued, substituting the native adjectival suffix -ach.

Pronunciation

• (Connacht) IPA^(key): /ˈɔpˠt̪ˠəx/
• (Ulster) IPA^(key): /ˈɔpˠt̪ˠa(x)/

Adjective

optach (genitive singular masculine optaigh, genitive singular feminine optaí, plural optacha)

1. optic

Declension

Declension of optach

Positive	singular		plural
	masculine	feminine	strong noun	weak noun
nominative	optach	optach	optacha
vocative	optaigh		optacha
genitive		optaí	optacha	optach
dative	optach	optach; optaigh (archaic)	optacha
Comparative	níos optaí
Superlative	is optaí

Related terms

• opta- (“opto-”)
• optaic f (“optics”)
• optúil (“optical”, adjective)

Mutation

Mutated forms of optach

radical	eclipsis	with h-prothesis	with t-prothesis
optach	n-optach	hoptach	not applicable

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

Further reading

• Ó Dónaill, Niall (1977), “optach”, in Foclóir Gaeilge–Béarla, Dublin: An Gúm, →ISBN
• de Bhaldraithe, Tomás (1959), “optach”, in English-Irish Dictionary, An Gúm
• “optach”, in New English-Irish Dictionary, Foras na Gaeilge, 2013–2025