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Frost in Irish (Sioc): Meaning, Pronunciation, Usage

‘sioc’ also means: to freeze

The Irish for frost is sioc, a masculine noun. Ag sioc is freezing, from the verb sioc.
Updated October 2026Report a mistake

How to say “frost” in Irish

Irish:
sioc
English:
frost
Word type:
noun (verbal noun)
Verbal noun of:
sioc, to freeze (ag sioc, freezing)
Gender:
masculine, third declension
Pronunciation:
“shuk”  /ʃʊk/
Various forms
Genitive singular:
seaca, an tseaca (e.g. oíche sheaca, a frosty night)

What does “sioc” mean?

frost
A thin layer of ice that forms on surfaces when the air temperature falls below freezing.Also: hoarfrost, freezing weather, ice.
Other entries for “sioc”

The same spelling has its own page as:

Other Irish words for frost: reo (frost), siocán (frost)

“Sioc” as a verbal noun

After ag, sioc means freezing: it is the verbal noun of the verb sioc (to freeze). A noun that follows it goes into the genitive.

agat
+
siocverbal noun
=
ag siocfreezing

“Sioc” with the article

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

an sioc
the frost
No change after an

“Sioc” in a sentence: Irish examples

Common Irish sentences using sioc, the Irish word for frost.

Bhí sioc ar an talamh ar maidin.
There was frost on the ground this morning.
Tá an sioc go dona anocht.
The frost is bad tonight.
Mhill an sioc na bláthanna sa ghairdín.
The frost ruined the flowers in the garden.
Is breá liom maidin sheaca ghlan.
I love a clear frosty morning.
Bhí an carr clúdaithe le sioc.
The car was covered in frost.
Beidh sioc trom ann i rith na hoíche.
There will be a heavy frost during the night.
Tá na bóithre contúirteach mar gheall ar an sioc.
The roads are dangerous because of the frost.

Other nouns in Irish

More everyday Irish nouns to learn next.

Frost in Irish: frequently asked questions

What is the Irish for frost?

The Irish for frost is sioc (pronounced “shuk”). It’s a masculine noun.

How do you pronounce sioc in Irish?

Sioc is said like “shuk” (IPA /ʃʊk/).

Does sioc have a plural?

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

Does sioc have more than one meaning?

Sioc also has its own entry as a verb meaning to freeze.

Why does sioc change to shioc?

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

What is the difference between 'sioc' and 'oighear'?

'Sioc' is frost that forms on surfaces in cold weather, while 'oighear' is ice in general, such as frozen water.

How do I say 'it is freezing' or 'there is frost'?

You say 'Tá sioc ann' for 'there is frost'. The verb 'sioc' also means 'to freeze', as in 'Shioc an loch' (the lake froze).

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