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Frosty in Irish (siocúil): Meaning, Forms, Examples

Other uses of ‘siocúil’: cold in manner

The Irish for frosty is siocúil: lá siocúil, a frosty day.
Updated October 2026Report a mistake

How to say “frosty” in Irish

Irish:
siocúil
English:
frosty, cold in manner
Word type:
adjective
Frostier:
níos siocúla
Frostiest:
is siocúla
Plural:
siocúla
Pronunciation:
“SHUK-ool”  /ˈʃɔkuːlʲ/

What does “siocúil” mean?

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

frosty
Very cold, with frost on the ground or in the air.Also: freezing, icy, chilly.
1 other meaning: cold in manner
2cold in manner
Unfriendly and cold in the way a person behaves.Also: frosty, cold, unfriendly, chilly.

“Siocúil” after a noun

An Irish adjective comes after its noun. Here is siocúil after lá (day, masculine), after oíche (night, feminine) and after a plural.

after a masculine nounlá siocúila frosty day
after a feminine nounoíche shiocúila frosty night
after a plural nounlaethanta siocúlafrosty days

séimhiú (the h) the ending

feminine
oíchenight
+
siocúilfrosty
=
oíche shiocúila frosty night

After a feminine noun the adjective gets a séimhiú, an h after its first letter: oíche shiocúil. After a masculine noun it stays as it is: lá siocúil.

plural
laethantadays
+
siocúlafrosty, plural
=
laethanta siocúlafrosty days

With a plural noun the adjective takes its plural form, siocúla. It also gets an h after a plural that ends in a slender consonant; after other plurals it does not: oícheanta siocúla.

Frostier, frostiest, very frosty

níosmore
+
siocúlafrosty
=
níos siocúlafrostier
ismost
+
siocúlafrosty
=
is siocúlafrostiest

Tá an oíche anocht níos siocúla ná aréir. Tonight is frostier than last night.

frostierníos siocúlain the past tense: ní ba shiocúla
frostiestis siocúlain the past tense: ba shiocúla
as frosty aschomh siocúil leno change after chomh
very frostyan-siocúilan- lenites, except d, t and s
too frostyróshiocúilró- lenites

“Siocúil” in a sentence: Irish examples

With a masculine noun, a feminine noun, a plural, a comparison and on its own.

Bhí lá siocúil ann inné.
It was a frosty day yesterday.
D'éirigh mé go luath maidin shiocúil.
I got up early on a frosty morning.
Bhí na hoícheanta siocúil i mí Eanáir.
The nights were frosty in January.
Tá an oíche anocht níos siocúla ná aréir.
Tonight is frostier than last night.
Tá sé siocúil amuigh inniu.
It is frosty outside today.

Other adjectives in Irish

More everyday Irish adjectives to learn next.

Frosty in Irish: frequently asked questions

What is the Irish for frosty?

The Irish for frosty is siocúil (pronounced “SHUK-ool”). It comes after the noun: lá siocúil, a frosty day; oíche shiocúil, a frosty night.

How do you say frostier and frostiest in Irish?

níos siocúla is frostier and is siocúla is frostiest. In the past tense they become ní ba shiocúla and ba shiocúla.

Why does siocúil become shiocúil?

After a feminine singular noun an adjective is lenited: it gets an h after its first letter. So oíche shiocúil (a frosty night) but lá siocúil (a frosty day), because lá is masculine.

What is the plural of siocúil?

With a plural noun siocúil becomes siocúla: laethanta siocúla, oícheanta siocúla.

How do you say very frosty in Irish?

an-siocúil. Too frosty is róshiocúil, and as frosty as is chomh siocúil le.

Does siocúil have more than one meaning?

Yes. Siocúil can mean frosty or cold in manner, depending on context; the first is the most common.

What is the difference between 'siocúil' and 'sioctha'?

'Siocúil' means frosty, describing weather or a day, while 'sioctha' means frozen, as in 'tá an loch sioctha', the lake is frozen.

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