HeyRua Get the app

Fermentation in Irish (Coipeadh): Meaning, Pronunciation, Usage

‘coipeadh’ also means: frothing · agitation

The Irish for fermentation is coipeadh, a masculine noun. Ag coipeadh is fermenting, from the verb coip.
Updated October 2026Report a mistake

How to say “fermentation” in Irish

Irish:
coipeadh
English:
fermentation, frothing, agitation
Word type:
noun (verbal noun)
Verbal noun of:
coip, to ferment (ag coipeadh, fermenting)
Gender:
masculine
Pronunciation:
“KIP-uh”  /ˈkɪpʲə/
Various forms
Genitive singular:
coipthe, an choipthe (e.g. próiseas an choipthe, the process of fermentation)

What does “coipeadh” mean?

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

fermentation
The process of fermenting, as when yeast works in dough or drink; it is the verbal noun of the verb coip.Also: fermenting, ferment.
2 other meanings: frothing or agitation
2frothing
The act of foaming or whipping up into froth, as with cream or eggs; verbal noun of coip.Also: foaming, whipping, whisking.
3agitation
A stirring up or excitement, figuratively, as of people or feelings.Also: excitement, stirring up.

“Coipeadh” as a verbal noun

After ag, coipeadh means fermenting: it is the verbal noun of the verb coip (to ferment). A noun that follows it goes into the genitive.

agat
+
coipeadhverbal noun
=
ag coipeadhfermenting

“Coipeadh” with the article

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

an coipeadh
the fermentation
No change after an

“Coipeadh” in a sentence: Irish examples

Common Irish sentences using coipeadh, the Irish word for fermentation.

Tá coipeadh ar siúl sa bhairille.
Fermentation is going on in the barrel.
Tógann an coipeadh cúpla seachtain.
The fermentation takes a couple of weeks.
Stop an coipeadh nuair a d'fhuaraigh sé.
The fermentation stopped when it cooled.
Is é an giosta is cúis leis an gcoipeadh.
Yeast is what causes the fermentation.
Le linn an choipthe déantar alcól.
Alcohol is made during fermentation.
Thosaigh an coipeadh i ndiaidh lae.
The fermentation started after a day.
Bhí coipeadh ar an uachtar sa bhabhla.
The cream was frothing in the bowl.

Other nouns in Irish

More everyday Irish nouns to learn next.

Fermentation in Irish: frequently asked questions

What is the Irish for fermentation?

The Irish for fermentation is coipeadh (pronounced “KIP-uh”). It’s a masculine noun. Depending on context it can also mean frothing or agitation.

How do you pronounce coipeadh in Irish?

Coipeadh is said like “KIP-uh” (IPA /ˈkɪpʲə/).

Does coipeadh have a plural?

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

Does coipeadh have more than one meaning?

Yes. Coipeadh can mean fermentation, frothing or agitation, depending on context; the first is the most common.

Why does coipeadh change to choipeadh or gcoipeadh?

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

What verb does coipeadh come from?

It is the verbal noun of coip, to ferment or froth, as in 'tá an bainne ag coipeadh', the milk is frothing.

Learn Irish by
actually speaking it

Learn everyday Irish words like coipeadh through guided conversation with Rua.

7-day free trial. Cancel anytime.

The HeyRua app home screen