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Impermeable in Irish (neamh-thréscaoilteach): Meaning, Forms, Examples

The Irish for impermeable is neamh-thréscaoilteach: ábhar neamh-thréscaoilteach, an impermeable material.
Updated October 2026Report a mistake

How to say “impermeable” in Irish

Irish:
neamh-thréscaoilteach
English:
impermeable
Word type:
adjective
More impermeable:
níos neamh-thréscaoiltí
Most impermeable:
is neamh-thréscaoiltí
Plural:
neamh-thréscaoilteacha
Pronunciation:
“nyav-HRAY-skweel-tyuk”  /nʲaw ˈhɾʲeːskiːlʲtʲəx/

What does “neamh-thréscaoilteach” mean?

impermeable
Not allowing liquid or gas to pass through.Also: impervious, waterproof, watertight, non-porous.

“Neamh-thréscaoilteach” after a noun

An Irish adjective comes after its noun. Here is neamh-thréscaoilteach after ábhar (material, masculine), after bróg (shoe, feminine) and after a plural.

after a masculine nounábhar neamh-thréscaoilteachan impermeable material
after a feminine nounbróg neamh-thréscaoilteachan impermeable shoe
after a plural nounábhair neamh-thréscaoilteachaimpermeable materials

séimhiú (the h) the ending

plural
ábhairmaterials
+
neamh-thréscaoilteachaimpermeable, plural
=
ábhair neamh-thréscaoilteachaimpermeable materials

With a plural noun the adjective takes its plural form, neamh-thréscaoilteacha.

More impermeable, most impermeable, very impermeable

níosmore
+
neamh-thréscaoiltíimpermeable
=
níos neamh-thréscaoiltímore impermeable
ismost
+
neamh-thréscaoiltíimpermeable
=
is neamh-thréscaoiltímost impermeable

Tá an chré níos neamh-thréscaoiltí ná an gaineamh. Clay is more impermeable than sand.

more impermeableníos neamh-thréscaoiltíin the past tense: ní ba neamh-thréscaoiltí
most impermeableis neamh-thréscaoiltíin the past tense: ba neamh-thréscaoiltí
as impermeable aschomh neamh-thréscaoilteach leno change after chomh
very impermeablean-neamh-thréscaoilteachan- lenites, except d, t and s
too impermeableróneamh-thréscaoilteachró- lenites

“Neamh-thréscaoilteach” in a sentence: Irish examples

With a masculine noun, a feminine noun, a plural, a comparison and on its own.

Is ábhar neamh-thréscaoilteach é an rubar.
Rubber is an impermeable material.
Tá cloch neamh-thréscaoilteach faoin ithir anseo.
There is impermeable rock under the soil here.
Úsáidtear ábhair neamh-thréscaoilteacha ar dhíonta.
Impermeable materials are used on roofs.
Tá an chré níos neamh-thréscaoiltí ná an gaineamh.
Clay is more impermeable than sand.
Tá an tsraith seo neamh-thréscaoilteach.
This layer is impermeable.

Other adjectives in Irish

More everyday Irish adjectives to learn next.

Impermeable in Irish: frequently asked questions

What is the Irish for impermeable?

The Irish for impermeable is neamh-thréscaoilteach (pronounced “nyav-HRAY-skweel-tyuk”). It comes after the noun: ábhar neamh-thréscaoilteach, an impermeable material; bróg neamh-thréscaoilteach, an impermeable shoe.

How do you say more impermeable and most impermeable in Irish?

níos neamh-thréscaoiltí is more impermeable and is neamh-thréscaoiltí is most impermeable. In the past tense they become ní ba neamh-thréscaoiltí and ba neamh-thréscaoiltí.

What is the plural of neamh-thréscaoilteach?

With a plural noun neamh-thréscaoilteach becomes neamh-thréscaoilteacha: ábhair neamh-thréscaoilteacha, bróga neamh-thréscaoilteacha.

How do you say very impermeable in Irish?

an-neamh-thréscaoilteach. Too impermeable is róneamh-thréscaoilteach, and as impermeable as is chomh neamh-thréscaoilteach le.

What is the opposite of 'neamh-thréscaoilteach'?

The opposite is 'tréscaoilteach', meaning permeable. The prefix 'neamh-' negates it and lenites the t.

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