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Measurement in Irish (Tomhas): Meaning, Pronunciation, Usage

‘tomhas’ also means: riddle · guess · gauge

The Irish for measurement is tomhas, a masculine noun (plural tomhais). Ag tomhas is measuring, from the verb tomhais.
Updated October 2026Report a mistake

How to say “measurement” in Irish

Irish:
tomhas
English:
measurement, riddle, guess, gauge
Word type:
noun (verbal noun)
Verbal noun of:
tomhais, to measure (ag tomhas, measuring)
Gender:
masculine, first declension
Pronunciation:
“toh-us”  /t̪ˠoːsˠ/
Various forms
Plural:
tomhais (measurements)
Genitive singular:
tomhais, an tomhais (e.g. ribín tomhais, tape measure)
Genitive plural:
tomhas, na dtomhas (e.g. cruinneas na dtomhas, the accuracy of the measurements)

What does “tomhas” mean?

“Tomhas” has four alternative meanings. The most common comes first.

measurement
The act of measuring something, or the size or amount found; it is the verbal noun of the verb tomhais.Also: measure, measuring, size, dimension.
3 other meanings: riddle or guess or gauge
2riddle
A puzzling question or problem that you must solve by thinking cleverly.Also: puzzle, conundrum.
3guess
An attempt to give an answer or estimate without knowing for certain.Also: estimate, guessing.
4gauge
A standard measure of thickness or size, for example of wire or sheet metal.Also: standard measure.

Other Irish words for measurement: miosúr (measure)

“Tomhas” as a verbal noun

After ag, tomhas means measuring: it is the verbal noun of the verb tomhais (to measure). A noun that follows it goes into the genitive.

agat
+
tomhasverbal noun
=
ag tomhasmeasuring

“Tomhas” with the article

The plural of measurement in Irish is tomhais. Here is tomhas after the article (an t-alt), in the singular and the plural.

an tomhas
the measurement
No change after an
na tomhais
the measurements
Plural: no change after na

“Tomhas” in a sentence: Irish examples

Common Irish sentences using tomhas, the Irish word for measurement.

Cuir tomhas orm, a Mhamaí.
Ask me a riddle, Mam.
Ghlac an táilliúir tomhas mo choim.
The tailor took my waist measurement.
Níl an tomhas ceart ar an doras seo.
This door is not the right size.
Thug sí na tomhais go léir dom.
She gave me all the measurements.
Bhí mo thomhas mícheart, faraor.
My guess was wrong, unfortunately.
Scríobh sí síos tomhas na fuinneoige.
She wrote down the window's measurement.
Úsáid gloine tomhais don bhainne.
Use a measuring glass for the milk.

Other nouns in Irish

More everyday Irish nouns to learn next.

Measurement in Irish: frequently asked questions

What is the Irish for measurement?

The Irish for measurement is tomhas (pronounced “toh-us”). It’s a masculine noun and the plural is tomhais. Depending on context it can also mean riddle or guess or gauge.

How do you pronounce tomhas in Irish?

Tomhas is said like “toh-us” (IPA /t̪ˠoːsˠ/).

What is the plural of measurement in Irish?

The plural of tomhas is tomhais; with the article, na tomhais means “the measurements”. The genitive plural is tomhas, as in cruinneas na dtomhas (the accuracy of the measurements).

Does tomhas have more than one meaning?

Yes. Tomhas can mean measurement, riddle, guess or gauge, depending on context; the first is the most common.

Why does tomhas change to thomhas or dtomhas?

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

How do I say 'ask a riddle' in Irish?

You say 'tomhas a chur ar dhuine', for example 'Chuir sé tomhas orm' (he asked me a riddle).

What is the difference between 'tomhas' and 'tomhais'?

'Tomhais' is the verb (measure, guess) and also the genitive and plural of the noun, while 'tomhas' is the noun and verbal noun: 'ag tomhas' means measuring.

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