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Arch in Irish (Stua): Meaning, Pronunciation, Usage

‘stua’ also means: arc

The Irish for arch is stua, a masculine noun (plural stuanna).
Updated October 2026Report a mistake

How to say “arch” in Irish

Irish:
stua
English:
arch, arc
Word type:
noun
Gender:
masculine, fourth declension
Pronunciation:
“stoo-uh”  /sˠt̪ˠuə/
Various forms
Plural:
stuanna (arches)
Genitive singular:
stua, an stua (e.g. barr an stua, top of the arch)
Genitive plural:
stuanna, na stuanna (e.g. sraith na stuanna, the row of arches)

What does “stua” mean?

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

arch
A curved structure spanning an opening, as in a bridge, doorway or building.Also: archway, arcade, vault.
1 other meaning: arc
2arc
A curved line or bow shape, such as part of a circle or the curve of a rainbow.Also: curve, bow.

Other Irish words for arch: áirse (arch)

“Stua” with the article

The plural of arch in Irish is stuanna. Here is stua after the article (an t-alt), in the singular and the plural.

an stua
the arch
No change after an
na stuanna
the arches
Plural: no change after na

“Stua” in a sentence: Irish examples

Common Irish sentences using stua, the Irish word for arch.

Tá stua mór cloiche os cionn an dorais.
There is a big stone arch over the door.
Shiúlamar faoin stua isteach sa chlós.
We walked under the arch into the yard.
Tá trí stua ar an seandroichead sin.
That old bridge has three arches.
Bhí na stuanna sa séipéal an-álainn.
The arches in the church were very beautiful.
Tá scoilt i mbarr an stua.
There is a crack in the top of the arch.
Tarraing stua idir an dá phointe.
Draw an arc between the two points.
Chonaic mé an bogha báistí ina stua sa spéir.
I saw the rainbow as an arc in the sky.

Other nouns in Irish

More everyday Irish nouns to learn next.

Arch in Irish: frequently asked questions

What is the Irish for arch?

The Irish for arch is stua (pronounced “stoo-uh”). It’s a masculine noun and the plural is stuanna. Depending on context it can also mean arc.

How do you pronounce stua in Irish?

Stua is said like “stoo-uh” (IPA /sˠt̪ˠuə/).

What is the plural of arch in Irish?

The plural of stua is stuanna; with the article, na stuanna means “the arches”. The genitive plural is stuanna, as in sraith na stuanna (the row of arches).

Does stua have more than one meaning?

Yes. Stua can mean arch or arc, depending on context; the first is the most common.

What is the difference between 'stua' and 'áirse'?

Both mean arch; 'áirse' is common for architectural arches, while 'stua' also covers arcs and curves, as in 'stua ceatha' (rainbow).

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