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Roof in Irish (Díon): Meaning, Pronunciation, Usage

‘díon’ also means: shelter · proofing · to protect

The Irish for roof is díon, a masculine noun (plural díonta). Ag díon is protecting, from the verb díon.
Updated October 2026Report a mistake

How to say “roof” in Irish

Irish:
díon
English:
roof, shelter, proofing
Word type:
noun (verbal noun)
Verbal noun of:
díon, to protect (ag díon, protecting)
Gender:
masculine, first declension
Pronunciation:
“jeen”  /dʲiːnˠ/
Various forms
Plural:
díonta (roofs)
Genitive singular:
dín, an dín (e.g. barr an dín, the top of the roof)
Genitive plural:
díonta, na ndíonta (e.g. deisiú na ndíonta, the repair of the roofs)

What does “díon” mean?

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

roof
The covering on top of a building or vehicle.Also: rooftop, roofing.
2 other meanings: shelter or proofing
2shelter
Protection or cover from weather or harm.Also: protection, cover, covering.
3proofing
The verbal noun of the verb díon, the act of protecting or making something proof against water or weather.Also: protecting, sheltering.
Other entries for “díon”

The same spelling has its own page as:

“Díon” as a verbal noun

After ag, díon means protecting: it is the verbal noun of the verb díon (to protect). A noun that follows it goes into the genitive.

agat
+
díonverbal noun
=
ag díonprotecting

“Díon” with the article

The plural of roof in Irish is díonta. Here is díon after the article (an t-alt), in the singular and the plural.

an díon
the roof
No change after an
na díonta
the roofs
Plural: no change after na

“Díon” in a sentence: Irish examples

Common Irish sentences using díon, the Irish word for roof.

Tá poll sa díon arís.
There's a hole in the roof again.
Chuir siad díon nua ar an teach.
They put a new roof on the house.
Bhí an cat ina shuí ar an díon.
The cat was sitting on the roof.
Tá dath dearg ar dhíon an tséipéil.
The church roof is red.
Rinne an stoirm damáiste do na díonta go léir.
The storm damaged all the roofs.
Tá an díon ag ligean isteach báistí.
The roof is letting in rain.
Thit sclátaí den díon i rith na hoíche.
Slates fell off the roof during the night.

Other nouns in Irish

More everyday Irish nouns to learn next.

Roof in Irish: frequently asked questions

What is the Irish for roof?

The Irish for roof is díon (pronounced “jeen”). It’s a masculine noun and the plural is díonta. Depending on context it can also mean shelter or proofing.

How do you pronounce díon in Irish?

Díon is said like “jeen” (IPA /dʲiːnˠ/).

What is the plural of roof in Irish?

The plural of díon is díonta; with the article, na díonta means “the roofs”. The genitive plural is díonta, as in deisiú na ndíonta (the repair of the roofs).

Does díon have more than one meaning?

Yes. Díon can mean roof, shelter or proofing, depending on context; the first is the most common. Díon also has its own entry as a verb meaning to protect.

Why does díon change to dhíon or ndíon?

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

What is the difference between díon and síleáil?

Díon is the roof on the outside of a building, while síleáil is the ceiling you see from inside a room.

How do you say waterproof in Irish?

Use díonach or uiscedhíonach, both related to díon in the sense of protection.

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