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Working in Irish (Oibriú): Meaning, Pronunciation, Usage

‘oibriú’ also means: working out · fermentation

The Irish for working is oibriú, a masculine noun (plural oibrithe). Ag oibriú is working, from the verb oibrigh.
Updated October 2026Report a mistake

How to say “working” in Irish

Irish:
oibriú
English:
working, working out, fermentation
Word type:
noun (verbal noun)
Verbal noun of:
oibrigh, to work (ag oibriú, working)
Gender:
masculine
Pronunciation:
“eb-ir-OO”  /ɛbʲəˈɾʲuː/
Various forms
Plural:
oibrithe
Genitive singular:
oibrithe, an oibrithe (e.g. costas oibrithe an innill, the cost of running the engine)
Genitive plural:
oibrithe, na n-oibrithe (e.g. am oibrithe, operating time)

What does “oibriú” mean?

“Oibriú” has three alternative meanings. The most common comes first.

working
The verbal noun of the verb oibrigh: the act of working, or of operating something such as a machine.Also: operation, operating, functioning.
2 other meanings: working out or fermentation
2working out
The act of working out or effecting something, such as a plan or a sum.Also: effecting, implementation.
3fermentation
The working or fermenting of a substance such as yeast or beer.Also: fermenting.

“Oibriú” as a verbal noun

After ag, oibriú means working: it is the verbal noun of the verb oibrigh (to work). A noun that follows it goes into the genitive.

agat
+
oibriúverbal noun
=
ag oibriúworking

“Oibriú” with the article

The plural of working in Irish is oibrithe. Here is oibriú after the article (an t-alt), in the singular and the plural.

an t-oibriú
the working
Masculine nouns take t before a vowel after an
na hoibrithe
the working (plural)
Plural: na adds h before a vowel

“Oibriú” in a sentence: Irish examples

Common Irish sentences using oibriú, the Irish word for working.

Tá sé ag oibriú go crua inniu.
He is working hard today.
Níl an meaisín ag oibriú i gceart.
The machine is not working properly.
Is simplí oibriú an chórais nua.
The new system is simple to operate.
Léigh mé na treoracha faoi oibriú an mheaisín.
I read the instructions on operating the machine.
Bhí mé ag oibriú amach an fhreagra.
I was working out the answer.
Tá an fón ag oibriú arís.
The phone is working again.

Other nouns in Irish

More everyday Irish nouns to learn next.

Working in Irish: frequently asked questions

What is the Irish for working?

The Irish for working is oibriú (pronounced “eb-ir-OO”). It’s a masculine noun and the plural is oibrithe. Depending on context it can also mean working out or fermentation.

How do you pronounce oibriú in Irish?

Oibriú is said like “eb-ir-OO” (IPA /ɛbʲəˈɾʲuː/).

What is the plural of working in Irish?

The plural of oibriú is oibrithe; with the article, it is na hoibrithe. The genitive plural is oibrithe, as in am oibrithe (operating time).

Does oibriú have more than one meaning?

Yes. Oibriú can mean working, working out or fermentation, depending on context; the first is the most common.

Why does oibriú sometimes have a t or h in front of it?

Irish nouns beginning with a vowel take a prefix after certain words: an t-oibriú (the working), a hoibriú (her working), a n-oibriú (their working).

What is the difference between oibriú and obair?

Obair is the ordinary noun for work or a job, while oibriú is the verbal noun of oibrigh and stresses the act of working or operating, as in 'ag oibriú an innill'.

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