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Sibling in Irish (Siblín): Meaning, Pronunciation, Usage

The Irish for sibling is siblín, a masculine noun (plural siblíní).
Updated October 2026Report a mistake

How to say “sibling” in Irish

Irish:
siblín
English:
sibling
Word type:
noun
Gender:
masculine, fourth declension
Pronunciation:
“shib-LEEN”  /ʃɪbʲˈlʲiːnʲ/
Various forms
Plural:
siblíní
Genitive singular:
siblín, an tsiblín (e.g. ainm an tsiblín, the sibling's name)
Genitive plural:
siblíní, na siblíní (e.g. líon na siblíní, the number of siblings)

What does “siblín” mean?

sibling
A brother or sister; a person who shares at least one parent with another.Also: brother or sister, sib.

Other Irish words for sibling: deartháir (brother), deirfiúr (sister), siúr (sister)

“Siblín” with the article

The plural of sibling in Irish is siblíní. Here is siblín after the article (an t-alt), in the singular and the plural.

an siblín
the sibling
No change after an
na siblíní
the sibling (plural)
Plural: no change after na

“Siblín” in a sentence: Irish examples

Common Irish sentences using siblín, the Irish word for sibling.

Cé mhéad siblín atá agat?
How many siblings do you have?
Tá ceathrar siblíní agam.
I have four siblings.
Is é mo shiblín is sine é.
He is my oldest sibling.
Bíonn siblíní ag troid go minic.
Siblings often fight.
Rugadh an siblín is óige anuraidh.
The youngest sibling was born last year.
Bhí cearta an tsiblín faoi chaibidil sa chúirt.
The sibling's rights were discussed in court.
Níl aon siblín ag mo chara.
My friend has no siblings.

Other nouns in Irish

More everyday Irish nouns to learn next.

Sibling in Irish: frequently asked questions

What is the Irish for sibling?

The Irish for sibling is siblín (pronounced “shib-LEEN”). It’s a masculine noun and the plural is siblíní.

How do you pronounce siblín in Irish?

Siblín is said like “shib-LEEN” (IPA /ʃɪbʲˈlʲiːnʲ/).

What is the plural of sibling in Irish?

The plural of siblín is siblíní; with the article, it is na siblíní. The genitive plural is siblíní, as in líon na siblíní (the number of siblings).

Why does siblín change to shiblín?

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

Is 'siblín' used in everyday speech?

It is mainly a formal or technical term; in everyday speech people usually say 'deartháireacha agus deirfiúracha' (brothers and sisters).

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