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Thinner in Irish (Tanaitheoir): Meaning, Pronunciation, Usage

The Irish for thinner is tanaitheoir, a masculine noun (plural tanaitheoirí).
Updated October 2026Report a mistake

How to say “thinner” in Irish

Irish:
tanaitheoir
English:
thinner
Word type:
noun
Gender:
masculine, third declension
Pronunciation:
“TAN-ee-hor”  /ˈt̪ˠanˠiːhoːɾʲ/
Various forms
Plural:
tanaitheoirí (thinners)
Genitive singular:
tanaitheora, an tanaitheora (e.g. buidéal tanaitheora, a bottle of thinner)
Genitive plural:
tanaitheoirí, na dtanaitheoirí (e.g. úsáid na dtanaitheoirí, the use of the thinners)

What does “tanaitheoir” mean?

thinner
A liquid used to thin paint, varnish or a similar substance.Also: paint thinner, diluent, solvent.

“Tanaitheoir” with the article

The plural of thinner in Irish is tanaitheoirí. Here is tanaitheoir after the article (an t-alt), in the singular and the plural.

an tanaitheoir
the thinner
No change after an
na tanaitheoirí
the thinners
Plural: no change after na

“Tanaitheoir” in a sentence: Irish examples

Common Irish sentences using tanaitheoir, the Irish word for thinner.

Cuir beagán tanaitheora leis an bpéint.
Add a little thinner to the paint.
Tá an tanaitheoir sa tseid.
The thinner is in the shed.
Ghlan mé na scuaba le tanaitheoir.
I cleaned the brushes with thinner.
Tá boladh láidir ón tanaitheoir seo.
This thinner has a strong smell.
Ná fág an tanaitheoir in aice na tine.
Don't leave the thinner near the fire.
Díoltar tanaitheoirí éagsúla sa siopa crua-earraí.
Various thinners are sold in the hardware shop.
Bhí mo lámha clúdaithe le tanaitheoir.
My hands were covered in thinner.

Other nouns in Irish

More everyday Irish nouns to learn next.

Thinner in Irish: frequently asked questions

What is the Irish for thinner?

The Irish for thinner is tanaitheoir (pronounced “TAN-ee-hor”). It’s a masculine noun and the plural is tanaitheoirí.

How do you pronounce tanaitheoir in Irish?

Tanaitheoir is said like “TAN-ee-hor” (IPA /ˈt̪ˠanˠiːhoːɾʲ/).

What is the plural of thinner in Irish?

The plural of tanaitheoir is tanaitheoirí; with the article, na tanaitheoirí means “the thinners”. The genitive plural is tanaitheoirí, as in úsáid na dtanaitheoirí (the use of the thinners).

Why does tanaitheoir change to thanaitheoir or dtanaitheoir?

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

What verb is tanaitheoir related to?

It comes from the verb tanaigh, 'to thin', with the agent suffix -eoir, so tanaitheoir is literally 'something that thins'.

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