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Decontamination in Irish (Díthruailliú): Meaning, Pronunciation, Usage

The Irish for decontamination is díthruailliú, a masculine noun. Ag díthruailliú is decontaminating, from the verb díthruailligh.
Updated October 2026Report a mistake

How to say “decontamination” in Irish

Irish:
díthruailliú
English:
decontamination
Word type:
noun (verbal noun)
Verbal noun of:
díthruailligh, to decontaminate (ag díthruailliú, decontaminating)
Gender:
masculine
Pronunciation:
“DEE-hroo-il-yoo”  /ˈdʲiːˌhɾˠuəlʲuː/
Various forms
Genitive singular:
díthruaillithe, an díthruaillithe (e.g. próiseas díthruaillithe, decontamination process)

What does “díthruailliú” mean?

decontamination
The removal of contamination or pollution from something; the verbal noun of the verb díthruailligh, to decontaminate.Also: decontaminating, depollution, cleaning up contamination.

“Díthruailliú” as a verbal noun

After ag, díthruailliú means decontaminating: it is the verbal noun of the verb díthruailligh (to decontaminate). A noun that follows it goes into the genitive.

agat
+
díthruailliúverbal noun
=
ag díthruailliúdecontaminating

“Díthruailliú” with the article

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

an díthruailliú
the decontamination
No change after an

“Díthruailliú” in a sentence: Irish examples

Common Irish sentences using díthruailliú, the Irish word for decontamination.

Tá díthruailliú na talún ag tosú inniu.
Decontamination of the land is starting today.
Thóg an díthruailliú níos mó ama ná mar a ceapadh.
The decontamination took longer than expected.
Bhí costas an díthruaillithe an-ard.
The cost of the decontamination was very high.
Tá gá le díthruailliú tar éis na timpiste.
Decontamination is needed after the accident.
Bhí na hoibrithe páirteach i ndíthruailliú an tsuímh.
The workers took part in decontaminating the site.
Cuireadh trealamh díthruaillithe chuig an monarcha.
Decontamination equipment was sent to the factory.
Rinneadh díthruailliú ar an abhainn anuraidh.
The river was decontaminated last year.

Other nouns in Irish

More everyday Irish nouns to learn next.

Decontamination in Irish: frequently asked questions

What is the Irish for decontamination?

The Irish for decontamination is díthruailliú (pronounced “DEE-hroo-il-yoo”). It’s a masculine noun.

How do you pronounce díthruailliú in Irish?

Díthruailliú is said like “DEE-hroo-il-yoo” (IPA /ˈdʲiːˌhɾˠuəlʲuː/).

Does díthruailliú have a plural?

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

Why does díthruailliú change to dhíthruailliú or ndíthruailliú?

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

How is díthruailliú related to truailliú?

Truailliú means pollution or contamination, and the prefix dí- reverses it, so díthruailliú is the removal of that contamination.

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