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Great speed in Irish (Mórluas): Meaning, Pronunciation, Usage

The Irish for great speed is mórluas, a masculine noun.
Updated October 2026Report a mistake

How to say “great speed” in Irish

Irish:
mórluas
English:
great speed
Word type:
noun
Gender:
masculine
Pronunciation:
“MOHR-loo-us”  /ˈmˠoːɾˠˌl̪ˠuəsˠ/
Various forms
Genitive singular:
mórluais, an mhórluais (e.g. contúirt an mhórluais, the danger of great speed)

What does “mórluas” mean?

great speed
A very high speed, as when something moves extremely fast.Also: high speed, full speed, top speed.

“Mórluas” with the article

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

an mórluas
the great speed
No change after an

“Mórluas” in a sentence: Irish examples

Common Irish sentences using mórluas, the Irish word for great speed.

Chuaigh an carr thart ar mhórluas.
The car went past at great speed.
Bhí an traein ag dul ar mhórluas inné.
The train was going at great speed yesterday.
Is baolach an mórluas ar bhóithre cúnga.
High speed is dangerous on narrow roads.
Tháinig sé isteach sa seomra ar mhórluas.
He came into the room at top speed.
Ní maith liom contúirt an mhórluais.
I don't like the danger of high speed.
Rith na páistí abhaile ar mhórluas.
The children ran home at great speed.
Tá an mórluas sin róchontúirteach do thiománaí nua.
That high speed is too dangerous for a new driver.

Other nouns in Irish

More everyday Irish nouns to learn next.

Great speed in Irish: frequently asked questions

What is the Irish for great speed?

The Irish for great speed is mórluas (pronounced “MOHR-loo-us”). It’s a masculine noun.

How do you pronounce mórluas in Irish?

Mórluas is said like “MOHR-loo-us” (IPA /ˈmˠoːɾˠˌl̪ˠuəsˠ/).

Does mórluas have a plural?

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

Why does mórluas change to mhórluas?

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

How is 'mórluas' different from 'luas'?

'Luas' simply means speed, while 'mórluas' adds 'mór' (great) to mean very high speed; it is most often heard in the phrase 'ar mhórluas', at great speed.

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