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Speed in Irish (Luas): Meaning, Pronunciation, Usage

‘luas’ also means: gear · earliness

The Irish for speed is luas, a masculine noun (plural luasanna).
Updated October 2026Report a mistake

How to say “speed” in Irish

Irish:
luas
English:
speed, gear, earliness
Word type:
noun
Gender:
masculine, first declension
Pronunciation:
“loo-uss”  /l̪ˠuəsˠ/
Various forms
Plural:
luasanna (speeds)
Genitive singular:
luais, an luais (e.g. teorainn luais, speed limit)
Genitive plural:
luasanna, na luasanna (e.g. raon na luasanna, the range of speeds)

What does “luas” mean?

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

speed
How fast something moves or happens.Also: velocity, rate, pace, quickness.
2 other meanings: gear or earliness
2gear
A gear of a car or bicycle, as in first or second gear.Also: speed (gear).
3earliness
Earliness or promptness, as in the phrase 'luas an earraigh' for an early spring.Also: promptness.

Other Irish words for speed: tapúlacht (quickness), tapaíocht (quickness)

“Luas” with the article

The plural of speed in Irish is luasanna. Here is luas after the article (an t-alt), in the singular and the plural.

an luas
the speed
No change after an
na luasanna
the speeds
Plural: no change after na

“Luas” in a sentence: Irish examples

Common Irish sentences using luas, the Irish word for speed.

Bhí sé ag tiomáint ar luas ard.
He was driving at a high speed.
Laghdaigh an luas, le do thoil.
Reduce the speed, please.
Sháraigh sí an teorainn luais ar an mbóthar.
She broke the speed limit on the road.
Tá cúig luas ag an rothar seo.
This bike has five gears.
Chuir mé an carr sa dara luas.
I put the car in second gear.
Is maith liom luas na traenach nua.
I like the speed of the new train.
Rith sé abhaile ar luas lasrach.
He ran home at lightning speed.

Other nouns in Irish

More everyday Irish nouns to learn next.

Speed in Irish: frequently asked questions

What is the Irish for speed?

The Irish for speed is luas (pronounced “loo-uss”). It’s a masculine noun and the plural is luasanna. Depending on context it can also mean gear or earliness.

How do you pronounce luas in Irish?

Luas is said like “loo-uss” (IPA /l̪ˠuəsˠ/).

What is the plural of speed in Irish?

The plural of luas is luasanna; with the article, na luasanna means “the speeds”. The genitive plural is luasanna, as in raon na luasanna (the range of speeds).

Does luas have more than one meaning?

Yes. Luas can mean speed, gear or earliness, depending on context; the first is the most common.

Is the Dublin tram called 'an Luas'?

Yes, the Dublin light rail system is named 'an Luas', literally 'the speed'.

What is the difference between 'luas' and 'deifir'?

'Luas' is speed or velocity as a measurable quality, while 'deifir' means hurry or haste, as in 'tá deifir orm'.

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