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Master key in Irish (Máistireochair): Meaning, Pronunciation, Usage

The Irish for master key is máistireochair, a feminine noun (plural máistireochracha).
Updated October 2026Report a mistake

How to say “master key” in Irish

Irish:
máistireochair
English:
master key
Word type:
noun
Gender:
feminine, fifth declension
Pronunciation:
“MAWSH-tyir-ukh-ir”  /ˈmˠaːʃtʲəɾʲˌɔxəɾʲ/
Various forms
Plural:
máistireochracha (master keys)
Genitive singular:
máistireochrach, na máistireochrach (e.g. úinéir na máistireochrach, the owner of the master key)
Genitive plural:
máistireochracha, na máistireochracha (e.g. cóipeanna na máistireochracha, the copies of the master keys)

What does “máistireochair” mean?

master key
A key that opens many different locks, such as all the doors in a building.Also: passkey, skeleton key.

“Máistireochair” with the article

The plural of master key in Irish is máistireochracha. Here is máistireochair after the article (an t-alt), in the singular and the plural.

an mháistireochair
the master key
Lenition: m becomes mh after an (feminine noun)
na máistireochracha
the master keys
Plural: no change after na

“Máistireochair” in a sentence: Irish examples

Common Irish sentences using máistireochair, the Irish word for master key.

Tá máistireochair ag an airíoch.
The caretaker has a master key.
Chaill mé an mháistireochair inné.
I lost the master key yesterday.
Cá bhfuil úinéir na máistireochrach?
Where is the holder of the master key?
Osclaíonn an mháistireochair gach doras san óstán.
The master key opens every door in the hotel.
Tá dhá mháistireochair san oifig.
There are two master keys in the office.
Coimeádtar na máistireochracha sa sábháilteán.
The master keys are kept in the safe.
Thug sé a mháistireochair don ghlantóir.
He gave his master key to the cleaner.

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Master key in Irish: frequently asked questions

What is the Irish for master key?

The Irish for master key is máistireochair (pronounced “MAWSH-tyir-ukh-ir”). It’s a feminine noun and the plural is máistireochracha.

How do you pronounce máistireochair in Irish?

Máistireochair is said like “MAWSH-tyir-ukh-ir” (IPA /ˈmˠaːʃtʲəɾʲˌɔxəɾʲ/).

What is the plural of master key in Irish?

The plural of máistireochair is máistireochracha; with the article, na máistireochracha means “the master keys”. The genitive plural is máistireochracha, as in cóipeanna na máistireochracha (the copies of the master keys).

Why does máistireochair change to mháistireochair?

After words like mo (my) and do (your) the first letter is lenited: mo mháistireochair. After ár (our) it stays ár máistireochair, because m does not take eclipsis.

How is 'máistireochair' formed?

It combines 'máistir' (master) and 'eochair' (key), and it declines like 'eochair', with genitive 'máistireochrach'.

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