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Ancestor in Irish (Sinsear): Meaning, Pronunciation, Usage

‘sinsear’ also means: elder

The Irish for ancestor is sinsear, a masculine noun (plural sinsir).
Updated October 2026Report a mistake

How to say “ancestor” in Irish

Irish:
sinsear
English:
ancestor, elder
Word type:
noun
Gender:
masculine, first declension
Pronunciation:
“SHIN-shur”  /ˈʃiːnʲʃəɾˠ/
Various forms
Plural:
sinsir (ancestors)
Genitive singular:
sinsir, an tsinsir (e.g. teach an tsinsir, the house of the ancestor)
Genitive plural:
sinsear, na sinsear (e.g. tír na sinsear, the land of the ancestors)

What does “sinsear” mean?

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

ancestor
A person from whom you are descended, usually more distant than a grandparent; in the plural, one's forebears.Also: forefather, forebear, progenitor.
1 other meaning: elder
2elder
An older or senior person, someone who comes before others in age or rank.Also: senior, older person.

“Sinsear” with the article

The plural of ancestor in Irish is sinsir. Here is sinsear after the article (an t-alt), in the singular and the plural.

an sinsear
the ancestor
No change after an
na sinsir
the ancestors
Plural: no change after na

“Sinsear” in a sentence: Irish examples

Common Irish sentences using sinsear, the Irish word for ancestor.

Tháinig mo shinsir as Contae Mhaigh Eo.
My ancestors came from County Mayo.
Labhair ár sinsir Gaeilge sa cheantar seo.
Our ancestors spoke Irish in this area.
Is é sin mo shinsear a tháinig go hÉirinn.
That is my ancestor who came to Ireland.
Is é creideamh na sinsear a choinnigh siad.
It is the faith of their forefathers that they kept.
Tá uaigheanna na sinsear sa reilig sin.
The ancestors' graves are in that graveyard.
Bhí ár sinsir ina gcónaí sa teach seo.
Our ancestors lived in this house.
Ba mhaith liom níos mó a fhoghlaim faoi mo shinsir.
I would like to learn more about my ancestors.

Other nouns in Irish

More everyday Irish nouns to learn next.

Ancestor in Irish: frequently asked questions

What is the Irish for ancestor?

The Irish for ancestor is sinsear (pronounced “SHIN-shur”). It’s a masculine noun and the plural is sinsir. Depending on context it can also mean elder.

How do you pronounce sinsear in Irish?

Sinsear is said like “SHIN-shur” (IPA /ˈʃiːnʲʃəɾˠ/).

What is the plural of ancestor in Irish?

The plural of sinsear is sinsir; with the article, na sinsir means “the ancestors”. The genitive plural is sinsear, as in tír na sinsear (the land of the ancestors).

Does sinsear have more than one meaning?

Yes. Sinsear can mean ancestor or elder, depending on context; the first is the most common.

Why does sinsear change to shinsear?

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

Is 'sinsear' used in the singular?

It is mostly used in the plural, as in 'mo shinsir' (my ancestors) or 'na sinsir', though 'sinsear' singular means one ancestor.

What is the opposite of 'sinsir'?

The usual opposite is 'sliocht' (descendants) or 'na glúnta atá le teacht' (future generations).

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