HeyRua Get the app

Main cause in Irish (Príomhchúis): Meaning, Pronunciation, Usage

The Irish for main cause is príomhchúis, a feminine noun (plural príomhchúiseanna).
Updated October 2026Report a mistake

How to say “main cause” in Irish

Irish:
príomhchúis
English:
main cause
Word type:
noun
Gender:
feminine
Pronunciation:
“PREEV-khoosh”  /ˈpɾʲiːvˌxuːʃ/
Various forms
Plural:
príomhchúiseanna (main causes)
Genitive singular:
príomhchúise, na príomhchúise (e.g. fiosrú na príomhchúise, investigation of the main cause)
Genitive plural:
príomhchúiseanna, na bpríomhchúiseanna (e.g. liosta na bpríomhchúiseanna, the list of main causes)

What does “príomhchúis” mean?

main cause
The chief or principal reason why something happens.Also: principal cause, main reason, chief cause, primary cause.

“Príomhchúis” with the article

The plural of main cause in Irish is príomhchúiseanna. Here is príomhchúis after the article (an t-alt), in the singular and the plural.

an phríomhchúis
the main cause
Lenition: p becomes ph after an (feminine noun)
na príomhchúiseanna
the main causes
Plural: no change after na

“Príomhchúis” in a sentence: Irish examples

Common Irish sentences using príomhchúis, the Irish word for main cause.

Is é an tobac príomhchúis na hailse scamhóg.
Tobacco is the main cause of lung cancer.
Cad é an phríomhchúis leis an timpiste?
What is the main cause of the accident?
Bhí an aimsir ina príomhchúis leis an moill.
The weather was the main cause of the delay.
Tá roinnt príomhchúiseanna leis an mbochtaineacht.
There are several main causes of poverty.
Ní fios fós cad é príomhchúis na tine.
The main cause of the fire is not yet known.
Is í an phríomhchúis gur fhág sé ná an t-airgead.
The main reason he left was the money.
Phléigh an tuarascáil príomhchúiseanna an chogaidh.
The report discussed the main causes of the war.

Other nouns in Irish

More everyday Irish nouns to learn next.

Main cause in Irish: frequently asked questions

What is the Irish for main cause?

The Irish for main cause is príomhchúis (pronounced “PREEV-khoosh”). It’s a feminine noun and the plural is príomhchúiseanna.

How do you pronounce príomhchúis in Irish?

Príomhchúis is said like “PREEV-khoosh” (IPA /ˈpɾʲiːvˌxuːʃ/).

What is the plural of main cause in Irish?

The plural of príomhchúis is príomhchúiseanna; with the article, na príomhchúiseanna means “the main causes”. The genitive plural is príomhchúiseanna, as in liosta na bpríomhchúiseanna (the list of main causes).

Why does príomhchúis change to phríomhchúis or bpríomhchúis?

Irish changes the start of some words after certain words. After mo (my) príomhchúis becomes mo phríomhchúis (lenition), and after ár (our) or i (in) it becomes ár bpríomhchúis (eclipsis).

Which preposition follows príomhchúis?

Use 'le' or the genitive: 'an phríomhchúis leis an timpiste' or 'príomhchúis na timpiste', both meaning the main cause of the accident.

Learn Irish by
actually speaking it

Learn everyday Irish words like príomhchúis through guided conversation with Rua.

7-day free trial. Cancel anytime.

The HeyRua app home screen