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Rust in Irish (Meirg): Meaning, Pronunciation, Usage

‘meirg’ also means: irritability

The Irish for rust is meirg, a feminine noun.
Updated October 2026Report a mistake

How to say “rust” in Irish

Irish:
meirg
English:
rust, irritability
Word type:
noun
Gender:
feminine, second declension
Pronunciation:
“MER-ig”  /mʲeɾʲəɟ/
Various forms
Genitive singular:
meirge, na meirge (e.g. dath na meirge, the colour of rust)

What does “meirg” mean?

“Meirg” has two alternative meanings. The most common comes first.

rust
The reddish-brown coating that forms on iron or steel when it is exposed to air and water.Also: corrosion, oxidation.
1 other meaning: irritability
2irritability
A cranky, peevish or crusty mood or temperament in a person.Also: crustiness, peevishness, crankiness.

“Meirg” with the article

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

an mheirg
the rust
Lenition: m becomes mh after an (feminine noun)

“Meirg” in a sentence: Irish examples

Common Irish sentences using meirg, the Irish word for rust.

Tá meirg ar an ngeata iarainn.
The iron gate is rusty.
Bhain sé an mheirg den rothar.
He removed the rust from the bicycle.
Tá boladh meirge ar an uisce seo.
This water smells of rust.
Tháinig meirg ar mo sheanuirlisí.
My old tools have gone rusty.
Tá poll sa charr de bharr na meirge.
There's a hole in the car because of the rust.
Cuir ola air chun meirg a chosc.
Put oil on it to prevent rust.
Tá meirg ar mo chuid Fraincise anois.
My French is rusty now.

Other nouns in Irish

More everyday Irish nouns to learn next.

Rust in Irish: frequently asked questions

What is the Irish for rust?

The Irish for rust is meirg (pronounced “MER-ig”). It’s a feminine noun. Depending on context it can also mean irritability.

How do you pronounce meirg in Irish?

Meirg is said like “MER-ig” (IPA /mʲeɾʲəɟ/).

Does meirg have a plural?

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

Does meirg have more than one meaning?

Yes. Meirg can mean rust or irritability, depending on context; the first is the most common.

Why does meirg change to mheirg?

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

How do I say something is rusty in Irish?

Say 'tá meirg air' (there is rust on it) or use the adjective 'meirgeach'. It is also used figuratively: 'tá meirg ar mo chuid Gaeilge' means my Irish is rusty.

Can meirg describe a person's mood?

Yes, it can mean irritability or crustiness, and 'meirgeach' can describe a peevish, cranky person.

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