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Opacity in Irish (Teimhneacht): Meaning, Pronunciation, Usage

‘teimhneacht’ also means: darkness

The Irish for opacity is teimhneacht, a feminine noun.
Updated October 2026Report a mistake

How to say “opacity” in Irish

Irish:
teimhneacht
English:
opacity, darkness
Word type:
noun
Gender:
feminine
Pronunciation:
“TEV-nyukht”  /tʲɛvʲnʲəxt/
Various forms
Genitive singular:
teimhneachta, na teimhneachta (e.g. leibhéal na teimhneachta, level of opacity)

What does “teimhneacht” mean?

“Teimhneacht” has two alternative meanings. The most common comes first.

opacity
The quality of being opaque, so that light cannot pass through.Also: opaqueness, darkness, dullness.
1 other meaning: darkness
2darkness
A state of being dark, dim or obscured, sometimes used figuratively for spiritual or mental darkness.Also: obscurity, dimness, gloom.

“Teimhneacht” with the article

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

an teimhneacht
the opacity
No change: d and t are not lenited after an

“Teimhneacht” in a sentence: Irish examples

Common Irish sentences using teimhneacht, the Irish word for opacity.

Tá teimhneacht na gloine seo an-ard.
The opacity of this glass is very high.
Ní ligeann teimhneacht an bhalla solas isteach.
The opacity of the wall lets no light in.
Tomhaiseann an gléas méid na teimhneachta.
The device measures the amount of opacity.
Bhí teimhneacht ar a shúile le haois.
His eyes had grown dim with age.
Athraigh an teimhneacht sa ríomhchlár grafaice.
Change the opacity in the graphics program.
Tagann teimhneacht san uisce tar éis na stoirme.
The water becomes cloudy after the storm.
Is airí fisiceach í an teimhneacht.
Opacity is a physical property.

Other nouns in Irish

More everyday Irish nouns to learn next.

Opacity in Irish: frequently asked questions

What is the Irish for opacity?

The Irish for opacity is teimhneacht (pronounced “TEV-nyukht”). It’s a feminine noun. Depending on context it can also mean darkness.

How do you pronounce teimhneacht in Irish?

Teimhneacht is said like “TEV-nyukht” (IPA /tʲɛvʲnʲəxt/).

Does teimhneacht have a plural?

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

Does teimhneacht have more than one meaning?

Yes. Teimhneacht can mean opacity or darkness, depending on context; the first is the most common.

Why does teimhneacht change to theimhneacht or dteimhneacht?

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

What is the opposite of teimhneacht?

The opposite is trédhearcacht, transparency; the adjectives are teimhneach (opaque) and trédhearcach (transparent).

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