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Optic in Irish (optach): Meaning, Forms, Examples

Other uses of ‘optach’: optical

The Irish for optic is optach: fear optach, an optic man.
Updated October 2026Report a mistake

How to say “optic” in Irish

Irish:
optach
English:
optic, optical
Word type:
adjective
More optic:
níos optaí
Most optic:
is optaí
Plural:
optacha
Pronunciation:
“UP-tukh”  /ˈɔpˠt̪ˠəx/

What does “optach” mean?

“Optach” has two alternative meanings. The most common comes first.

optic
Relating to the eye or to sight.Also: optical, visual, of the eye.
1 other meaning: optical
2optical
Relating to light and the way lenses and instruments use it.Also: light-based, lens-related.

“Optach” after a noun

An Irish adjective comes after its noun. Here is optach after fear (man, masculine), after súil (eye, feminine) and after a plural.

after a masculine nounfear optachan optic man
after a feminine nounsúil optachan optic eye
after a plural nounfir optachaoptic men

séimhiú (the h) the ending

plural
firmen
+
optachaoptic, plural
=
fir optachaoptic men

With a plural noun the adjective takes its plural form, optacha.

More optic, most optic, very optic

níosmore
+
optaíoptic
=
níos optaímore optic
ismost
+
optaíoptic
=
is optaímost optic

Tá an trealamh seo níos optaí ná an seancheann. This equipment is more optical than the old one.

more opticníos optaíin the past tense: ní b'optaí
most opticis optaíin the past tense: ab optaí
as optic aschomh hoptach lechomh puts an h before a vowel
very optican-optachan- lenites, except d, t and s
too opticró-optachró- lenites

“Optach” in a sentence: Irish examples

With a masculine noun, a feminine noun, a plural, a comparison and on its own.

Rinne an dochtúir scrúdú ar an néaróg optach.
The doctor examined the optic nerve.
Is gléas optach é an micreascóp.
The microscope is an optical instrument.
Úsáidtear snáithíní optacha sa líonra nua.
Optical fibres are used in the new network.
Tá an trealamh seo níos optaí ná an seancheann.
This equipment is more optical than the old one.
Tá an fhadhb seo optach, ní néareolaíoch.
This problem is optical, not neurological.

Other adjectives in Irish

More everyday Irish adjectives to learn next.

Optic in Irish: frequently asked questions

What is the Irish for optic?

The Irish for optic is optach (pronounced “UP-tukh”). It comes after the noun: fear optach, an optic man; súil optach, an optic eye.

How do you say more optic and most optic in Irish?

níos optaí is more optic and is optaí is most optic. In the past tense they become ní b'optaí and ab optaí.

What is the plural of optach?

With a plural noun optach becomes optacha: fir optacha, súile optacha.

How do you say very optic in Irish?

an-optach. Too optic is ró-optach, and as optic as is chomh hoptach le.

Does optach have more than one meaning?

Yes. Optach can mean optic or optical, depending on context; the first is the most common.

How do you say 'optical fibre' in Irish?

It is 'snáithín optach', plural 'snáithíní optacha'.

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