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Ability in Irish (Cumas): Meaning, Pronunciation, Usage

‘cumas’ also means: capacity · faculty

The Irish for ability is cumas, a masculine noun.
Updated October 2026Report a mistake

How to say “ability” in Irish

Irish:
cumas
English:
ability, capacity, faculty
Word type:
noun
Gender:
masculine, first declension
Pronunciation:
“KUM-us”  /ˈkʊmˠəsˠ/
Various forms
Genitive singular:
cumais, an chumais (e.g. easpa cumais, lack of ability)

What does “cumas” mean?

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

ability
The power or skill to do something.Also: capability, power, competence, aptitude.
2 other meanings: capacity or faculty
2capacity
The amount something can hold or produce, or its potential.Also: potential, output.
3faculty
A natural power of the mind or body, such as speech.Also: power of speech.

Other Irish words for ability: scil (skill), inniúlacht (ability), inmhe (capability), ábaltacht (ability)

“Cumas” with the article

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

an cumas
the ability
No change after an

“Cumas” in a sentence: Irish examples

Common Irish sentences using cumas, the Irish word for ability.

Tá cumas iontach aici sa cheol.
She has great ability in music.
Ní raibh sé ar mo chumas teacht inné.
I wasn't able to come yesterday.
Rinne sé a dhícheall de réir a chumais.
He did his best according to his ability.
Tá an cumas ann a bheith ina dhochtúir maith.
He has the ability to be a good doctor.
Cuireann an teicneolaíocht ar ár gcumas obair ón mbaile.
Technology enables us to work from home.
Chaill sé a chumas cainte tar éis na timpiste.
He lost the power of speech after the accident.
Cad é cumas an staidiam nua?
What is the capacity of the new stadium?

Other nouns in Irish

More everyday Irish nouns to learn next.

Ability in Irish: frequently asked questions

What is the Irish for ability?

The Irish for ability is cumas (pronounced “KUM-us”). It’s a masculine noun. Depending on context it can also mean capacity or faculty.

How do you pronounce cumas in Irish?

Cumas is said like “KUM-us” (IPA /ˈkʊmˠəsˠ/).

Does cumas have a plural?

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

Does cumas have more than one meaning?

Yes. Cumas can mean ability, capacity or faculty, depending on context; the first is the most common.

Why does cumas change to chumas or gcumas?

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

How do I say 'I am able to' using cumas?

Use the phrase 'tá sé ar mo chumas', for example 'Tá sé ar mo chumas snámh' means 'I am able to swim'. To enable someone is 'cuir ar chumas duine'.

What is the difference between cumas and cumhacht?

'Cumas' is ability or capability to do something, while 'cumhacht' is power in the sense of authority, force or energy.

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