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Etymology in Irish (Sanasaíocht): Meaning, Pronunciation, Usage

The Irish for etymology is sanasaíocht, a feminine noun.
Updated October 2026Report a mistake

How to say “etymology” in Irish

Irish:
sanasaíocht
English:
etymology
Word type:
noun
Gender:
feminine, third declension
Pronunciation:
“SAN-uh-see-ukht”  /ˈsˠanˠəsˠiːəxt̪ˠ/
Various forms
Genitive singular:
sanasaíochta, na sanasaíochta (e.g. foclóir sanasaíochta, etymological dictionary)

What does “sanasaíocht” mean?

etymology
The study of the origin and history of words, or the origin of a particular word.Also: word origin, derivation of words, origin of a word.

“Sanasaíocht” with the article

Here is sanasaíocht after the article (an t-alt).

an tsanasaíocht
the etymology
Feminine nouns take t before s after an

“Sanasaíocht” in a sentence: Irish examples

Common Irish sentences using sanasaíocht, the Irish word for etymology.

Is breá liom sanasaíocht na bhfocal Gaeilge.
I love the etymology of Irish words.
Níl an tsanasaíocht cinnte sa chás seo.
The etymology isn't certain in this case.
Cheannaigh sí foclóir sanasaíochta inné.
She bought an etymological dictionary yesterday.
Tá suim mhór aige sa tsanasaíocht.
He has a great interest in etymology.
Cad é sanasaíocht an fhocail sin?
What is the etymology of that word?
Rinne mé staidéar ar an tsanasaíocht san ollscoil.
I studied etymology at university.
Tugann an leabhar sanasaíocht gach logainm.
The book gives the etymology of every place name.

Other nouns in Irish

More everyday Irish nouns to learn next.

Etymology in Irish: frequently asked questions

What is the Irish for etymology?

The Irish for etymology is sanasaíocht (pronounced “SAN-uh-see-ukht”). It’s a feminine noun.

How do you pronounce sanasaíocht in Irish?

Sanasaíocht is said like “SAN-uh-see-ukht” (IPA /ˈsˠanˠəsˠiːəxt̪ˠ/).

Does sanasaíocht have a plural?

No plural form is given for sanasaíocht in the standard. Many abstract and mass nouns in Irish have no plural.

Why does sanasaíocht change to shanasaíocht?

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

Is 'sanasaíocht' related to 'sanas'?

Yes, 'sanas' means a gloss or etymological explanation, and 'sanasaíocht' is the study of word origins built from it.

How do I say 'etymological' in Irish?

Use the genitive as an adjective: 'foclóir sanasaíochta' means an etymological dictionary.

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