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Great-grandmother in Irish (Sin-seanmháthair): Meaning, Pronunciation, Usage

The Irish for great-grandmother is sin-seanmháthair, a feminine noun (plural sin-seanmháithreacha).
Updated October 2026Report a mistake

How to say “great-grandmother” in Irish

Irish:
sin-seanmháthair
English:
great-grandmother
Word type:
noun
Gender:
feminine
Pronunciation:
“shin-SHAN-waw-her”  /ˈʃɪnʲˌʃanˠwaːhəɾʲ/
Various forms
Plural:
sin-seanmháithreacha (great-grandmothers)
Genitive singular:
sin-seanmháthar, na sin-seanmháthar (e.g. teach na sin-seanmháthar, the great-grandmother's house)
Genitive plural:
sin-seanmháithreacha, na sin-seanmháithreacha (e.g. grianghraif na sin-seanmháithreacha, photographs of the great-grandmothers)

What does “sin-seanmháthair” mean?

great-grandmother
The mother of one of your grandparents.Also: great grandmother, great-granny.

“Sin-seanmháthair” with the article

The plural of great-grandmother in Irish is sin-seanmháithreacha. Here is sin-seanmháthair after the article (an t-alt), in the singular and the plural.

an tsin-seanmháthair
the great-grandmother
Feminine nouns take t before s after an
na sin-seanmháithreacha
the great-grandmothers
Plural: no change after na

“Sin-seanmháthair” in a sentence: Irish examples

Common Irish sentences using sin-seanmháthair, the Irish word for great-grandmother.

Tá mo shin-seanmháthair fós beo.
My great-grandmother is still alive.
Rugadh mo shin-seanmháthair i gCorcaigh.
My great-grandmother was born in Cork.
Seo fáinne pósta mo shin-seanmháthar.
This is my great-grandmother's wedding ring.
Bhí ocht bpáiste ag a sin-seanmháthair.
Her great-grandmother had eight children.
Labhair mo shin-seanmháthair Gaeilge i gcónaí.
My great-grandmother always spoke Irish.
Tá an dá shin-seanmháthair curtha sa reilig chéanna.
Both great-grandmothers are buried in the same graveyard.
Is cuimhin liom scéalta mo shin-seanmháthar.
I remember my great-grandmother's stories.

Other nouns in Irish

More everyday Irish nouns to learn next.

Great-grandmother in Irish: frequently asked questions

What is the Irish for great-grandmother?

The Irish for great-grandmother is sin-seanmháthair (pronounced “shin-SHAN-waw-her”). It’s a feminine noun and the plural is sin-seanmháithreacha.

How do you pronounce sin-seanmháthair in Irish?

Sin-seanmháthair is said like “shin-SHAN-waw-her” (IPA /ˈʃɪnʲˌʃanˠwaːhəɾʲ/).

What is the plural of great-grandmother in Irish?

The plural of sin-seanmháthair is sin-seanmháithreacha; with the article, na sin-seanmháithreacha means “the great-grandmothers”. The genitive plural is sin-seanmháithreacha, as in grianghraif na sin-seanmháithreacha (photographs of the great-grandmothers).

Why does sin-seanmháthair change to shin-seanmháthair?

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

What is the word for great-grandfather?

Great-grandfather is 'sin-seanathair', formed the same way from 'seanathair' (grandfather).

How do I say great-great-grandmother?

Add another 'sin-': 'sin-sin-seanmháthair' is used for great-great-grandmother.

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