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Smog in Irish (Toitcheo): Meaning, Pronunciation, Usage

The Irish for smog is toitcheo, a masculine noun.
Updated October 2026Report a mistake

How to say “smog” in Irish

Irish:
toitcheo
English:
smog
Word type:
noun
Gender:
masculine, fourth declension
Pronunciation:
“TITCH-kyoh”  /ˈt̪ˠɪtʲçoː/
Various forms
Genitive singular:
toitcheo, an toitcheo (e.g. leibhéal an toitcheo, the smog level)

What does “toitcheo” mean?

smog
A thick, dirty fog mixed with smoke and pollution, often seen over large cities.Also: smoky fog, polluted fog, haze.

“Toitcheo” with the article

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

an toitcheo
the smog
No change after an

“Toitcheo” in a sentence: Irish examples

Common Irish sentences using toitcheo, the Irish word for smog.

Bhí toitcheo trom os cionn na cathrach inniu.
There was heavy smog over the city today.
Ní fhacamar an ghrian mar gheall ar an toitcheo.
We didn't see the sun because of the smog.
Is cúis mhór toitcheo é trácht na gcarranna.
Car traffic is a major cause of smog.
Tá an toitcheo go dona i gcathracha móra.
The smog is bad in big cities.
Bhí sé deacair análú sa toitcheo.
It was hard to breathe in the smog.
Cuireann an rialtas fainic ar dhaoine faoi chontúirt an toitcheo.
The government warns people about the danger of the smog.
Bhí Londain clúdaithe i dtoitcheo fadó.
London used to be covered in smog long ago.

Other nouns in Irish

More everyday Irish nouns to learn next.

Smog in Irish: frequently asked questions

What is the Irish for smog?

The Irish for smog is toitcheo (pronounced “TITCH-kyoh”). It’s a masculine noun.

How do you pronounce toitcheo in Irish?

Toitcheo is said like “TITCH-kyoh” (IPA /ˈt̪ˠɪtʲçoː/).

Does toitcheo have a plural?

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

Why does toitcheo change to thoitcheo or dtoitcheo?

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

How is 'toitcheo' formed?

It combines 'toit' (smoke) and 'ceo' (fog), just as English 'smog' blends smoke and fog. Plain fog is simply 'ceo'.

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