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Isolation in Irish (Leithlisiú): Meaning, Pronunciation, Usage

The Irish for isolation is leithlisiú, a masculine noun. Ag leithlisiú is isolating, from the verb leithlisigh.
Updated October 2026Report a mistake

How to say “isolation” in Irish

Irish:
leithlisiú
English:
isolation
Word type:
noun (verbal noun)
Verbal noun of:
leithlisigh, to isolate (ag leithlisiú, isolating)
Gender:
masculine
Pronunciation:
“LEH-lish-oo”  /ˈlʲehlʲɪʃuː/
Various forms
Genitive singular:
leithlisithe, an leithlisithe (e.g. tréimhse leithlisithe, period of isolation)

What does “leithlisiú” mean?

isolation
The act of isolating or separating something or someone from others; verbal noun of the verb leithlisigh.Also: isolating, separation, quarantine.

Other Irish words for isolation: iargúltacht (remoteness)

“Leithlisiú” as a verbal noun

After ag, leithlisiú means isolating: it is the verbal noun of the verb leithlisigh (to isolate). A noun that follows it goes into the genitive.

agat
+
leithlisiúverbal noun
=
ag leithlisiúisolating

“Leithlisiú” with the article

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

an leithlisiú
the isolation
No change after an

“Leithlisiú” in a sentence: Irish examples

Common Irish sentences using leithlisiú, the Irish word for isolation.

Tá leithlisiú riachtanach don othar seo.
Isolation is necessary for this patient.
Mhol an dochtúir leithlisiú ar feadh seachtaine.
The doctor recommended isolation for a week.
Chuir an leithlisiú isteach go mór air.
The isolation affected him greatly.
Bhí sí i leithlisiú sa bharda ar feadh trí lá.
She was in isolation on the ward for three days.
Tá deireadh leis an tréimhse leithlisithe anois.
The isolation period is over now.
Is cuid thábhachtach den taighde é leithlisiú an víris.
Isolating the virus is an important part of the research.
Ní maith liom an leithlisiú sa teach.
I don't like the isolation in the house.

Other nouns in Irish

More everyday Irish nouns to learn next.

Isolation in Irish: frequently asked questions

What is the Irish for isolation?

The Irish for isolation is leithlisiú (pronounced “LEH-lish-oo”). It’s a masculine noun.

How do you pronounce leithlisiú in Irish?

Leithlisiú is said like “LEH-lish-oo” (IPA /ˈlʲehlʲɪʃuː/).

Does leithlisiú have a plural?

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

How is leithlisiú different from aonrú?

Leithlisiú is the technical word for isolating something, as in medicine or science, while aonrú also means isolation but often in the sense of being alone or solitary.

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