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Army in Irish (Arm): Meaning, Pronunciation, Usage

‘arm’ also means: weapon · implement

The Irish for army is arm, a masculine noun (plural airm).
Updated October 2026Report a mistake

How to say “army” in Irish

Irish:
arm
English:
army, weapon, implement
Word type:
noun
Gender:
masculine, first declension
Pronunciation:
“AR-um”  /ˈaɾˠəmˠ/
Various forms
Plural:
airm (armies)
Genitive singular:
airm, an airm (e.g. saighdiúirí an airm, soldiers of the army)
Genitive plural:
arm, na n-arm (e.g. díol na n-arm, the sale of arms)

What does “arm” mean?

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

army
A large organised military force of a country.Also: armed forces, military, troops.
2 other meanings: weapon or implement
2weapon
An instrument used for fighting or attacking; in the plural, arms or weaponry.Also: arms, weaponry, firearm.
3implement
A tool or implement used for a task.Also: tool.

Other Irish words for army: míleata (military)

“Arm” with the article

The plural of army in Irish is airm. Here is arm after the article (an t-alt), in the singular and the plural.

an t-arm
the army
Masculine nouns take t before a vowel after an
na hairm
the armies
Plural: na adds h before a vowel

“Arm” in a sentence: Irish examples

Common Irish sentences using arm, the Irish word for army.

Bhí siad san arm.
They were in the army.
Liostáil sé san arm nuair a bhí sé ocht mbliana déag.
He enlisted in the army when he was eighteen.
Tá mo dheartháir san Arm anois.
My brother is in the army now.
Bhí éide an airm air.
He was wearing the army uniform.
Leag siad síos a n-airm ar deireadh.
They finally laid down their arms.
Ní raibh arm ar bith aige.
He had no weapon at all.
Tá cosc ar airm tine sa tír seo.
Firearms are banned in this country.

Other nouns in Irish

More everyday Irish nouns to learn next.

Army in Irish: frequently asked questions

What is the Irish for army?

The Irish for army is arm (pronounced “AR-um”). It’s a masculine noun and the plural is airm. Depending on context it can also mean weapon or implement.

How do you pronounce arm in Irish?

Arm is said like “AR-um” (IPA /ˈaɾˠəmˠ/).

What is the plural of army in Irish?

The plural of arm is airm; with the article, na hairm means “the armies”. The genitive plural is arm, as in díol na n-arm (the sale of arms).

Does arm have more than one meaning?

Yes. Arm can mean army, weapon or implement, depending on context; the first is the most common.

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

Irish nouns beginning with a vowel take a prefix after certain words: an t-arm (the army), a harm (her army), a n-arm (their army), na hairm (the armies).

Does 'arm' mean the body part arm?

No, 'arm' in Irish means army or weapon. The body part is 'lámh' or, for the upper arm, 'géag'.

How do you say 'the Irish Army'?

It is 'Óglaigh na hÉireann' officially, though 'an tArm' is used in everyday speech.

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