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Sister in Irish (Siúr): Meaning, Pronunciation, Usage

‘siúr’ also means: nun

The Irish for sister is siúr, a feminine noun (plural siúracha).
Updated October 2026Report a mistake

How to say “sister” in Irish

Irish:
siúr
English:
sister, nun
Word type:
noun
Gender:
feminine, fifth declension
Pronunciation:
“shoor”  /ʃuːɾˠ/
Various forms
Plural:
siúracha (sisters)
Genitive singular:
siúrach, na siúrach (e.g. teach na siúrach, the sister's house)
Genitive plural:
siúracha, na siúracha (e.g. clochar na siúracha, the sisters' convent)

What does “siúr” mean?

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

sister
A female sibling; a literary or dialect word for a sister, now mostly replaced by 'deirfiúr'.Also: sibling.
1 other meaning: nun
2nun
A woman who is a member of a religious order, used as a title, as in Siúr Bríd.Also: sister, religious sister.

Other Irish words for sister: deirfiúr (sister)

“Siúr” with the article

The plural of sister in Irish is siúracha. Here is siúr after the article (an t-alt), in the singular and the plural.

an tsiúr
the sister
Feminine nouns take t before s after an
na siúracha
the sisters
Plural: no change after na

“Siúr” in a sentence: Irish examples

Common Irish sentences using siúr, the Irish word for sister.

Is siúr í m'aintín i gclochar i gCorcaigh.
My aunt is a nun in a convent in Cork.
Mhúin an tSiúr Bríd ceol dúinn ar scoil.
Sister Bríd taught us music at school.
Tá na siúracha ag guí sa séipéal.
The nuns are praying in the chapel.
Chuaigh sí isteach sna siúracha nuair a bhí sí óg.
She joined the nuns when she was young.
Bhí aghaidh na siúrach lán de chineáltas.
The nun's face was full of kindness.
Rinne na siúracha obair mhór san ospidéal.
The nuns did great work in the hospital.
Labhair mé leis an tsiúr tar éis an Aifrinn.
I spoke to the nun after Mass.

Other nouns in Irish

More everyday Irish nouns to learn next.

Sister in Irish: frequently asked questions

What is the Irish for sister?

The Irish for sister is siúr (pronounced “shoor”). It’s a feminine noun and the plural is siúracha. Depending on context it can also mean nun.

How do you pronounce siúr in Irish?

Siúr is said like “shoor” (IPA /ʃuːɾˠ/).

What is the plural of sister in Irish?

The plural of siúr is siúracha; with the article, na siúracha means “the sisters”. The genitive plural is siúracha, as in clochar na siúracha (the sisters' convent).

Does siúr have more than one meaning?

Yes. Siúr can mean sister or nun, depending on context; the first is the most common.

Why does siúr change to shiúr?

After words like mo (my) and do (your) the first letter is lenited: mo shiúr. After ár (our) it stays ár siúr, because s does not take eclipsis.

What is the difference between 'siúr' and 'deirfiúr'?

'Deirfiúr' is the everyday word for a sister in a family, while 'siúr' is mainly used for a nun or as a title, as in an tSiúr Máire. 'Bean rialta' is another common word for a nun.

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