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Thinning in Irish (Tanú): Meaning, Pronunciation, Usage

‘tanú’ also means: dilution

The Irish for thinning is tanú, a masculine noun. Ag tanú is thinning, from the verb tanaigh.
Updated October 2026Report a mistake

How to say “thinning” in Irish

Irish:
tanú
English:
thinning, dilution
Word type:
noun (verbal noun)
Verbal noun of:
tanaigh, to thin (ag tanú, thinning)
Gender:
masculine, fourth declension
Pronunciation:
“TAN-oo”  /ˈt̪ˠanˠuː/
Various forms
Genitive singular:
tanaithe, an tanaithe (e.g. próiseas an tanaithe, the process of thinning)

What does “tanú” mean?

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

thinning
The verbal noun of 'tanaigh': the act of making something thinner or less dense.Also: making thin, attenuation.
1 other meaning: dilution
2dilution
The act of weakening a liquid by adding water or another liquid to it.Also: diluting, watering down.

“Tanú” as a verbal noun

After ag, tanú means thinning: it is the verbal noun of the verb tanaigh (to thin). A noun that follows it goes into the genitive.

agat
+
tanúverbal noun
=
ag tanúthinning

“Tanú” with the article

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

an tanú
the thinning
No change after an

“Tanú” in a sentence: Irish examples

Common Irish sentences using tanú, the Irish word for thinning.

Tá tanú ag teastáil ón bpéint seo.
This paint needs thinning.
Rinne sé tanú ar na meacain sa ghairdín.
He thinned out the carrots in the garden.
Tá an tanú déanta againn anois.
We have done the thinning now.
Bhí sí ag tanú an anraith le huisce.
She was thinning the soup with water.
Tá a chuid gruaige ag tanú le blianta.
His hair has been thinning for years.
Ní raibh gá le tuilleadh tanaithe.
There was no need for more thinning.
Cuir uisce leis chun tanú a dhéanamh air.
Add water to it to dilute it.

Other nouns in Irish

More everyday Irish nouns to learn next.

Thinning in Irish: frequently asked questions

What is the Irish for thinning?

The Irish for thinning is tanú (pronounced “TAN-oo”). It’s a masculine noun. Depending on context it can also mean dilution.

How do you pronounce tanú in Irish?

Tanú is said like “TAN-oo” (IPA /ˈt̪ˠanˠuː/).

Does tanú have a plural?

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

Does tanú have more than one meaning?

Yes. Tanú can mean thinning or dilution, depending on context; the first is the most common.

Why does tanú change to thanú or dtanú?

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

What is the difference between 'tanú' and 'caolú'?

Both can mean thinning or diluting; 'caolú' is often used for diluting liquids or narrowing, while 'tanú' stresses making something thin or sparse, as in 'tanú gruaige' (thinning of hair).

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