HeyRua Get the app

Antifreeze in Irish (Frithreo): Meaning, Pronunciation, Usage

The Irish for antifreeze is frithreo, a masculine noun.
Updated October 2026Report a mistake

How to say “antifreeze” in Irish

Irish:
frithreo
English:
antifreeze
Word type:
noun
Gender:
masculine
Pronunciation:
“FRIH-roe”  /ˈfʲɾʲɪhɾʲoː/
Various forms
Genitive singular:
frithreo, an fhrithreo (e.g. buidéal frithreo, a bottle of antifreeze)

What does “frithreo” mean?

antifreeze
A liquid added to water, especially in a car's cooling system, to stop it from freezing.Also: anti-freeze, coolant.

“Frithreo” with the article

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

an frithreo
the antifreeze
No change after an

“Frithreo” in a sentence: Irish examples

Common Irish sentences using frithreo, the Irish word for antifreeze.

Chuir mé frithreo sa charr inné.
I put antifreeze in the car yesterday.
Tá an frithreo nimhiúil do pheataí.
Antifreeze is poisonous to pets.
Cheannaigh sé buidéal frithreo sa gharáiste.
He bought a bottle of antifreeze at the garage.
An bhfuil go leor frithreo san inneall?
Is there enough antifreeze in the engine?
Ní mór frithreo a sheiceáil roimh an ngeimhreadh.
You need to check the antifreeze before winter.
Bhí dath glas ar an bhfrithreo.
The antifreeze was green.
Coinnigh an frithreo as raon leanaí.
Keep the antifreeze out of children's reach.

Other nouns in Irish

More everyday Irish nouns to learn next.

Antifreeze in Irish: frequently asked questions

What is the Irish for antifreeze?

The Irish for antifreeze is frithreo (pronounced “FRIH-roe”). It’s a masculine noun.

How do you pronounce frithreo in Irish?

Frithreo is said like “FRIH-roe” (IPA /ˈfʲɾʲɪhɾʲoː/).

Does frithreo have a plural?

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

Why does frithreo change to fhrithreo or bhfrithreo?

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

How is 'frithreo' formed?

It combines the prefix 'frith-' (against, anti-) with 'reo' (freezing), so it literally means 'anti-freeze'.

Learn Irish by
actually speaking it

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

7-day free trial. Cancel anytime.

The HeyRua app home screen