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Excrement in Irish (Cac): Meaning, Pronunciation, Usage

‘cac’ also means: rubbish · defecating · to defecate

The Irish for excrement is cac, a masculine noun (plural cacanna). Ag cac is defecating, from the verb cac.
Updated October 2026Report a mistake

How to say “excrement” in Irish

Irish:
cac
English:
excrement, rubbish, defecating
Word type:
noun (verbal noun)
Verbal noun of:
cac, to defecate (ag cac, defecating)
Gender:
masculine, third declension
Pronunciation:
“kok”  /kak/
Various forms
Plural:
cacanna (excrements)
Genitive singular:
caca, an chaca (e.g. boladh an chaca, the smell of the excrement)
Genitive plural:
cacanna, na gcacanna (e.g. ag glanadh cacanna madraí, cleaning up dog dirt)

What does “cac” mean?

“Cac” has three alternative meanings. The most common comes first.

excrement
Solid waste matter passed from the body; a vulgar or childish word for faeces.Also: faeces, shit, poo, dung.
2 other meanings: rubbish or defecating
2rubbish
Something worthless or nonsense, or a mess, used figuratively and informally.Also: nonsense, crap, mess.
3defecating
The verbal noun of the verb cac, the act of defecating.Also: defecation, shitting.
Other entries for “cac”

The same spelling has its own page as:

“Cac” as a verbal noun

After ag, cac means defecating: it is the verbal noun of the verb cac (to defecate). A noun that follows it goes into the genitive.

agat
+
cacverbal noun
=
ag cacdefecating

“Cac” with the article

The plural of excrement in Irish is cacanna. Here is cac after the article (an t-alt), in the singular and the plural.

an cac
the excrement
No change after an
na cacanna
the excrements
Plural: no change after na

“Cac” in a sentence: Irish examples

Common Irish sentences using cac, the Irish word for excrement.

Tá cac madra ar mo bhróg.
There's dog poo on my shoe.
Bhí cac ar fud na háite.
There was poo all over the place.
Ná seas sa chac sin!
Don't stand in that poo!
Ní raibh ann ach cac, dar liom.
It was just rubbish, in my opinion.
Bhí boladh an chaca ar fud an tí.
The smell of the excrement was all over the house.
Fágadh cac madra ar an gcosán arís.
Dog poo was left on the footpath again.
Tá an páiste ag iarraidh cac a dhéanamh.
The child needs to do a poo.

Other nouns in Irish

More everyday Irish nouns to learn next.

Excrement in Irish: frequently asked questions

What is the Irish for excrement?

The Irish for excrement is cac (pronounced “kok”). It’s a masculine noun and the plural is cacanna. Depending on context it can also mean rubbish or defecating.

How do you pronounce cac in Irish?

Cac is said like “kok” (IPA /kak/).

What is the plural of excrement in Irish?

The plural of cac is cacanna; with the article, na cacanna means “the excrements”. The genitive plural is cacanna, as in ag glanadh cacanna madraí (cleaning up dog dirt).

Does cac have more than one meaning?

Yes. Cac can mean excrement, rubbish or defecating, depending on context; the first is the most common. Cac also has its own entry as a verb meaning to defecate.

Why does cac change to chac or gcac?

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

Is 'cac' rude?

Yes, 'cac' is vulgar or childish, much like 'poo' or 'shit'; in polite or medical contexts use 'feicí' or 'fual' for urine.

What does 'ina chac' mean?

'Bhí an áit ina chac' means the place was in a mess, a common informal expression.

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