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Knowledge in Irish (Iúl): Meaning, Pronunciation, Usage

‘iúl’ also means: guidance · attention

The Irish for knowledge is iúl, a masculine noun.
Updated October 2026Report a mistake

How to say “knowledge” in Irish

Irish:
iúl
English:
knowledge, guidance, attention
Word type:
noun
Gender:
masculine, first declension
Pronunciation:
“ool”  /uːlˠ/
Various forms
Genitive singular:
iúil, an iúil (e.g. fear iúil, guide, pilot)

What does “iúl” mean?

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

knowledge
Awareness or knowledge of something, used mainly in the phrase 'cur in iúl', to make known or inform.Also: awareness, information, making known.
2 other meanings: guidance or attention
2guidance
Direction or guidance, as in steering a course or following someone's lead.Also: direction, course, lead.
3attention
Attention or heed paid to something.Also: heed, notice.

Other Irish words for knowledge: fios (knowledge), eolas (knowledge), eol (knowledge), aithnid (acquaintance)

“Iúl” with the article

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

an t-iúl
the knowledge
Masculine nouns take t before a vowel after an

“Iúl” in a sentence: Irish examples

Common Irish sentences using iúl, the Irish word for knowledge.

Cuir in iúl dom má tá aon fhadhb ann.
Let me know if there is any problem.
Chuir sí in iúl dúinn go raibh sí tinn.
She told us she was sick.
Cuireadh na torthaí in iúl dúinn inné.
We were informed of the results yesterday.
Ba cheart don chomhlacht é a chur in iúl dúinn.
The company should let us know.
Chuir sé a mhíshástacht in iúl go soiléir.
He expressed his dissatisfaction clearly.

Other nouns in Irish

More everyday Irish nouns to learn next.

Knowledge in Irish: frequently asked questions

What is the Irish for knowledge?

The Irish for knowledge is iúl (pronounced “ool”). It’s a masculine noun. Depending on context it can also mean guidance or attention.

How do you pronounce iúl in Irish?

Iúl is said like “ool” (IPA /uːlˠ/).

Does iúl have a plural?

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

Does iúl have more than one meaning?

Yes. Iúl can mean knowledge, guidance or attention, depending on context; the first is the most common.

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

Irish nouns beginning with a vowel take a prefix after certain words: an t-iúl (the knowledge), a hiúl (her knowledge), a n-iúl (their knowledge).

How do I say 'to let someone know' in Irish?

Use 'cuir in iúl do', for example 'Cuir in iúl dom é', let me know.

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