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Rotation in Irish (Rothlú): Meaning, Pronunciation, Usage

‘rothlú’ also means: rotation (in turn)

The Irish for rotation is rothlú, a masculine noun (plural rothluithe). Ag rothlú is rotating, from the verb rothlaigh.
Updated October 2026Report a mistake

How to say “rotation” in Irish

Irish:
rothlú
English:
rotation, rotation (in turn)
Word type:
noun (verbal noun)
Verbal noun of:
rothlaigh, to rotate (ag rothlú, rotating)
Gender:
masculine, fourth declension
Pronunciation:
“ROH-loo”  /ˈɾˠɔhl̪ˠuː/
Various forms
Plural:
rothluithe (rotations)
Genitive singular:
rothlaithe, an rothlaithe (e.g. luas an rothlaithe, speed of the rotation)
Genitive plural:
rothluithe, na rothluithe (e.g. líon na rothluithe, number of rotations)

What does “rothlú” mean?

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

rotation
Rotation or revolving, the act of turning round; it is the verbal noun of the verb 'rothlaigh'.Also: revolving, spinning, turning, whirling.
1 other meaning: rotation (in turn)
2rotation (in turn)
The taking of turns in a regular order, as with crops or duties.Also: rotation, taking turns, alternation.

“Rothlú” as a verbal noun

After ag, rothlú means rotating: it is the verbal noun of the verb rothlaigh (to rotate). A noun that follows it goes into the genitive.

agat
+
rothlúverbal noun
=
ag rothlúrotating

“Rothlú” with the article

The plural of rotation in Irish is rothluithe. Here is rothlú after the article (an t-alt), in the singular and the plural.

an rothlú
the rotation
No change after an
na rothluithe
the rotations
Plural: no change after na

“Rothlú” in a sentence: Irish examples

Common Irish sentences using rothlú, the Irish word for rotation.

Tá rothlú an domhain ag cruthú lae agus oíche.
The earth's rotation creates day and night.
Chonaic mé rothlú na roth ar an mbóthar.
I saw the wheels spinning on the road.
Méadaigh luas an rothlaithe go mall.
Increase the speed of rotation slowly.
Rinne an rinceoir trí rothluithe gan stad.
The dancer did three spins without stopping.
Bíonn rothlú barr ar siúl ar an bhfeirm.
Crop rotation is practised on the farm.
Tá an t-inneall i rothlú leanúnach.
The engine is in continuous rotation.
Ní fhaca mé rothlú chomh tapa riamh.
I never saw such a fast rotation.

Other nouns in Irish

More everyday Irish nouns to learn next.

Rotation in Irish: frequently asked questions

What is the Irish for rotation?

The Irish for rotation is rothlú (pronounced “ROH-loo”). It’s a masculine noun and the plural is rothluithe. Depending on context it can also mean rotation (in turn).

How do you pronounce rothlú in Irish?

Rothlú is said like “ROH-loo” (IPA /ˈɾˠɔhl̪ˠuː/).

What is the plural of rotation in Irish?

The plural of rothlú is rothluithe; with the article, na rothluithe means “the rotations”. The genitive plural is rothluithe, as in líon na rothluithe (number of rotations).

Does rothlú have more than one meaning?

Yes. Rothlú can mean rotation or rotation (in turn), depending on context; the first is the most common.

How does 'rothlú' differ from 'casadh'?

'Casadh' is the everyday word for a turn or twist, while 'rothlú' means continuous rotation or spinning, as in rothlú an domhain.

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