HeyRua Get the app

Great-grandfather in Irish (Garathair): Meaning, Pronunciation, Usage

The Irish for great-grandfather is garathair, a masculine noun (plural garaithreacha).
Updated October 2026Report a mistake

How to say “great-grandfather” in Irish

Irish:
garathair
English:
great-grandfather
Word type:
noun
Gender:
masculine
Pronunciation:
“GAR-ah-her”  /ˈɡaɾˠahəɾʲ/
Various forms
Plural:
garaithreacha (great-grandfathers)
Genitive singular:
garathar, an gharathar (e.g. teach mo gharathar, my great-grandfather's house)
Genitive plural:
garaithreacha, na ngaraithreacha (e.g. ainmneacha na ngaraithreacha, the names of the great-grandfathers)

What does “garathair” mean?

great-grandfather
The father of your grandfather or grandmother.Also: great grandfather, ancestor.

Other Irish words for great-grandfather: sin-seanathair (great-grandfather)

“Garathair” with the article

The plural of great-grandfather in Irish is garaithreacha. Here is garathair after the article (an t-alt), in the singular and the plural.

an garathair
the great-grandfather
No change after an
na garaithreacha
the great-grandfathers
Plural: no change after na

“Garathair” in a sentence: Irish examples

Common Irish sentences using garathair, the Irish word for great-grandfather.

Bhí mo gharathair ina iascaire i gConamara.
My great-grandfather was a fisherman in Connemara.
Níor casadh an garathair orm riamh.
I never met my great-grandfather.
Seo grianghraf de mo gharathair.
This is a photo of my great-grandfather.
Tá uaigh mo gharathar sa reilig sin.
My great-grandfather's grave is in that graveyard.
Rugadh a gharathair i Meiriceá.
His great-grandfather was born in America.
Bhí ceithre gharathair agam, ar ndóigh.
I had four great-grandfathers, of course.
D'fhoghlaim mé scéalta faoi shaol an gharathar.
I learned stories about my great-grandfather's life.

Other nouns in Irish

More everyday Irish nouns to learn next.

Great-grandfather in Irish: frequently asked questions

What is the Irish for great-grandfather?

The Irish for great-grandfather is garathair (pronounced “GAR-ah-her”). It’s a masculine noun and the plural is garaithreacha.

How do you pronounce garathair in Irish?

Garathair is said like “GAR-ah-her” (IPA /ˈɡaɾˠahəɾʲ/).

What is the plural of great-grandfather in Irish?

The plural of garathair is garaithreacha; with the article, na garaithreacha means “the great-grandfathers”. The genitive plural is garaithreacha, as in ainmneacha na ngaraithreacha (the names of the great-grandfathers).

Why does garathair change to gharathair or ngarathair?

Irish changes the start of some words after certain words. After mo (my) garathair becomes mo gharathair (lenition), and after ár (our) or i (in) it becomes ár ngarathair (eclipsis).

What is the difference between 'garathair' and 'seanathair'?

'Seanathair' is grandfather, while 'garathair' is great-grandfather, one generation further back. 'Sin-seanathair' is also used for great-grandfather.

Learn Irish by
actually speaking it

Learn everyday Irish words like garathair through guided conversation with Rua.

7-day free trial. Cancel anytime.

The HeyRua app home screen