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Faeces in Irish (Faecas): Meaning, Pronunciation, Usage

The Irish for faeces is faecas, a masculine noun (plural faecais).
Updated October 2026Report a mistake

How to say “faeces” in Irish

Irish:
faecas
English:
faeces
Word type:
noun
Gender:
masculine, first declension
Pronunciation:
“FAY-kus”  /ˈfeːkəs/
Various forms
Plural:
faecais (faeces)
Genitive singular:
faecais, an fhaecais (e.g. sampla faecais, a faeces sample)
Genitive plural:
faecas, na bhfaecas (e.g. anailís na bhfaecas, the analysis of the faeces)

What does “faecas” mean?

faeces
Solid waste matter that is passed out of the body through the bowels.Also: feces, excrement, stool, dung.

Other Irish words for faeces: cac (excrement)

“Faecas” with the article

The plural of faeces in Irish is faecais. Here is faecas after the article (an t-alt), in the singular and the plural.

an faecas
the faeces
No change after an
na faecais
the faeces
Plural: no change after na

“Faecas” in a sentence: Irish examples

Common Irish sentences using faecas, the Irish word for faeces.

Fuarthas fuil san fhaecas.
Blood was found in the faeces.
Tá an faecas an-dorcha le seachtain.
The stool has been very dark for a week.
D'iarr an dochtúir sampla faecais orm.
The doctor asked me for a stool sample.
Scaiptear an galar trí fhaecas ainmhithe.
The disease is spread through animal faeces.
Ní mór faecais a scrúdú sa tsaotharlann.
Faeces must be examined in the laboratory.
Bhí boladh láidir faecais sa seomra.
There was a strong smell of faeces in the room.
Is dramhaíl choirp é faecas.
Faeces is bodily waste.

Other nouns in Irish

More everyday Irish nouns to learn next.

Faeces in Irish: frequently asked questions

What is the Irish for faeces?

The Irish for faeces is faecas (pronounced “FAY-kus”). It’s a masculine noun and the plural is faecais.

How do you pronounce faecas in Irish?

Faecas is said like “FAY-kus” (IPA /ˈfeːkəs/).

What is the plural of faeces in Irish?

The plural of faecas is faecais; with the article, na faecais means “the faeces”. The genitive plural is faecas, as in anailís na bhfaecas (the analysis of the faeces).

Why does faecas change to fhaecas or bhfaecas?

Irish changes the start of some words after certain words. After mo (my) faecas becomes m'fhaecas (lenition), and after ár (our) or i (in) it becomes ár bhfaecas (eclipsis).

Is 'faecas' the everyday word for poo?

No, 'faecas' is a medical or technical term; in everyday speech people say 'cac', and for animals 'aoileach' or 'otrach' is used for dung.

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