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Mould in Irish (Múscán): Meaning, Pronunciation, Usage

‘múscán’ also means: spongy substance

The Irish for mould is múscán, a masculine noun (plural múscáin).
Updated October 2026Report a mistake

How to say “mould” in Irish

Irish:
múscán
English:
mould, spongy substance
Word type:
noun
Gender:
masculine, first declension
Pronunciation:
“MOOS-kawn”  /ˈmˠuːsˠkaːnˠ/
Various forms
Plural:
múscáin (moulds)
Genitive singular:
múscáin, an mhúscáin (e.g. boladh an mhúscáin, the smell of the mould)
Genitive plural:
múscán, na múscán (e.g. fás na múscán, the growth of moulds)

What does “múscán” mean?

“Múscán” has two alternative meanings. The most common comes first.

mould
A fuzzy fungus that grows on damp or stale things such as bread or cheese.Also: mold, mildew, fungus.
1 other meaning: spongy substance
2spongy substance
A soft, spongy or oozy substance, such as soggy wood or damp matter.Also: sponge, ooze, pulp.

Other Irish words for mould: múnla (mould), múnlaigh (mould)

“Múscán” with the article

The plural of mould in Irish is múscáin. Here is múscán after the article (an t-alt), in the singular and the plural.

an múscán
the mould
No change after an
na múscáin
the moulds
Plural: no change after na

“Múscán” in a sentence: Irish examples

Common Irish sentences using múscán, the Irish word for mould.

Tá múscán ar an arán seo.
There's mould on this bread.
Chaith mé amach an cháis mar bhí múscán uirthi.
I threw out the cheese because it had mould on it.
Bhí an múscán ag fás ar an mballa.
The mould was growing on the wall.
Ní maith liom boladh an mhúscáin sa seomra.
I don't like the smell of mould in the room.
Tá múscán gorm ag fás ar phíosa aráin.
Blue mould is growing on a piece of bread.
Fásann múscáin éagsúla in áiteanna taise.
Various moulds grow in damp places.
Bhí an t-adhmad lofa ina mhúscán.
The rotten wood had turned spongy.

Other nouns in Irish

More everyday Irish nouns to learn next.

Mould in Irish: frequently asked questions

What is the Irish for mould?

The Irish for mould is múscán (pronounced “MOOS-kawn”). It’s a masculine noun and the plural is múscáin. Depending on context it can also mean spongy substance.

How do you pronounce múscán in Irish?

Múscán is said like “MOOS-kawn” (IPA /ˈmˠuːsˠkaːnˠ/).

What is the plural of mould in Irish?

The plural of múscán is múscáin; with the article, na múscáin means “the moulds”. The genitive plural is múscán, as in fás na múscán (the growth of moulds).

Does múscán have more than one meaning?

Yes. Múscán can mean mould or spongy substance, depending on context; the first is the most common.

Why does múscán change to mhúscán?

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

What is the difference between 'múscán' and 'caonach'?

'Múscán' is mould or a spongy, oozy substance, while 'caonach' is moss, though 'caonach liath' is also used for mould or mildew.

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