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To measure in Irish (tomhais): Meaning, Conjugation, Examples

Other uses of ‘tomhais’: guess

The Irish for to measure is tomhais; ag tomhas is measuring.
Updated October 2026Report a mistake

How to say “to measure” in Irish

Irish:
tomhais
English:
to measure, guess
Word type:
verb, first-conjugation
Verbal noun:
tomhas (ag tomhas, measuring)
Verbal adjective:
tomhaiste
Pronunciation:
“toosh”  /t̪ˠuːʃ/

What does “tomhais” mean?

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

to measure
To find the size, length, amount or weight of something.Also: gauge, weigh, size up.
1 other meaning: guess
2to guess
To give an answer or estimate without knowing for sure.Also: estimate, reckon.

“Tomhais” in the different tenses

Every form follows An Caighdeán Oifigiúil.

Aimsir Chaite (Past)

PersonPositiveNegativeQuestion
mé (I)Thomhais méI measuredNíor thomhais méI did not measureAr thomhais mé?Did I measure?
tú (you)Thomhais túYou measuredNíor thomhais túYou did not measureAr thomhais tú?Did you measure?
sé / sí (he / she)Thomhais sé / síHe measuredNíor thomhais sé / síHe did not measureAr thomhais sé / sí?Did he measure?
sinn (we)ThomhaiseamarWe measuredNíor thomhaiseamarWe did not measureAr thomhaiseamar?Did we measure?
sibh (you, plural)Thomhais sibhYou measuredNíor thomhais sibhYou did not measureAr thomhais sibh?Did you measure?
siad (they)Thomhais siadThey measuredNíor thomhais siadThey did not measureAr thomhais siad?Did they measure?
saorbhriathar (autonomous)TomhaiseadhNíor tomhaiseadhAr tomhaiseadh?

Aimsir Láithreach (Present)

PersonPositiveNegativeQuestion
mé (I)TomhaisimI measureNí thomhaisimI do not measureAn dtomhaisim?Do I measure?
tú (you)Tomhaiseann túYou measureNí thomhaiseann túYou do not measureAn dtomhaiseann tú?Do you measure?
sé / sí (he / she)Tomhaiseann sé / síHe measuresNí thomhaiseann sé / síHe does not measureAn dtomhaiseann sé / sí?Does he measure?
sinn (we)TomhaisimidWe measureNí thomhaisimidWe do not measureAn dtomhaisimid?Do we measure?
sibh (you, plural)Tomhaiseann sibhYou measureNí thomhaiseann sibhYou do not measureAn dtomhaiseann sibh?Do you measure?
siad (they)Tomhaiseann siadThey measureNí thomhaiseann siadThey do not measureAn dtomhaiseann siad?Do they measure?
saorbhriathar (autonomous)TomhaistearNí thomhaistearAn dtomhaistear?

Aimsir Fháistineach (Future)

PersonPositiveNegativeQuestion
mé (I)Tomhaisfidh méI will measureNí thomhaisfidh méI will not measureAn dtomhaisfidh mé?Will I measure?
tú (you)Tomhaisfidh túYou will measureNí thomhaisfidh túYou will not measureAn dtomhaisfidh tú?Will you measure?
sé / sí (he / she)Tomhaisfidh sé / síHe will measureNí thomhaisfidh sé / síHe will not measureAn dtomhaisfidh sé / sí?Will he measure?
sinn (we)TomhaisfimidWe will measureNí thomhaisfimidWe will not measureAn dtomhaisfimid?Will we measure?
sibh (you, plural)Tomhaisfidh sibhYou will measureNí thomhaisfidh sibhYou will not measureAn dtomhaisfidh sibh?Will you measure?
siad (they)Tomhaisfidh siadThey will measureNí thomhaisfidh siadThey will not measureAn dtomhaisfidh siad?Will they measure?
saorbhriathar (autonomous)TomhaisfearNí thomhaisfearAn dtomhaisfear?

Modh Coinníollach (Conditional)

PersonPositiveNegativeQuestion
mé (I)ThomhaisfinnI would measureNí thomhaisfinnI would not measureAn dtomhaisfinn?Would I measure?
tú (you)ThomhaisfeáYou would measureNí thomhaisfeáYou would not measureAn dtomhaisfeá?Would you measure?
sé / sí (he / she)Thomhaisfeadh sé / síHe would measureNí thomhaisfeadh sé / síHe would not measureAn dtomhaisfeadh sé / sí?Would he measure?
sinn (we)ThomhaisfimisWe would measureNí thomhaisfimisWe would not measureAn dtomhaisfimis?Would we measure?
sibh (you, plural)Thomhaisfeadh sibhYou would measureNí thomhaisfeadh sibhYou would not measureAn dtomhaisfeadh sibh?Would you measure?
siad (they)ThomhaisfidísThey would measureNí thomhaisfidísThey would not measureAn dtomhaisfidís?Would they measure?
saorbhriathar (autonomous)ThomhaisfíNí thomhaisfíAn dtomhaisfí?

“Tomhais” in a sentence: Irish examples

Past, present, future and conditional, with a negative and a question.

Thomhais mé an seomra inné.
I measured the room yesterday.
Tomhaiseann an dochtúir airde na bpáistí.
The doctor measures the children's height.
Tomhaisfidh sí an fhuinneog amárach.
She will measure the window tomorrow.
Ní thomhaisfeá cá raibh mé!
You'd never guess where I was!
Níor thomhais siad an t-uisce i gceart.
They didn't measure the water properly.
Ar thomhais tú an t-adhmad fós?
Did you measure the wood yet?

Other verbs in Irish

More everyday Irish verbs to learn next.

To measure in Irish: frequently asked questions

What is the Irish for to measure?

The Irish for to measure is tomhais (pronounced “toosh”). It is a first-conjugation verb; the verbal noun is tomhas.

What is the verbal noun of tomhais?

The verbal noun of tomhais is tomhas, used after ag for the continuous: ag tomhas (measuring). The verbal adjective is tomhaiste.

How do you say tomhais in the past and the future?

Past: Thomhais mé; negative Níor thomhais mé; question Ar thomhais mé?. Future: Tomhaisfidh mé; negative Ní thomhaisfidh mé; question An dtomhaisfidh mé?.

What is the modh coinníollach of tomhais?

The conditional (modh coinníollach) first person is Thomhaisfinn (I would measure); negative Ní thomhaisfinn; question An dtomhaisfinn?.

Does tomhais have more than one meaning?

Yes. Tomhais can mean to measure or to guess, depending on context; the first is the most common.

What does the verbal noun 'tomhas' mean on its own?

'Tomhas' means a measurement, and also a riddle or guess: 'Seo tomhas duit' means 'Here's a riddle for you'.

Is 'tomhais' the same as 'meáigh'?

No: 'meáigh' means to weigh, while 'tomhais' is the general verb to measure or to guess.

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