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To weaken in Irish (lagaigh): Meaning, Conjugation, Examples

Other uses of ‘lagaigh’: slacken · dilute

The Irish for to weaken is lagaigh; ag lagú is weakening.
Updated October 2026Report a mistake

How to say “to weaken” in Irish

Irish:
lagaigh
English:
to weaken, slacken, dilute
Word type:
verb, second-conjugation
Verbal noun:
lagú (ag lagú, weakening)
Verbal adjective:
lagaithe
Pronunciation:
“LAG-ee”  /ˈlˠaɡiː/

What does “lagaigh” mean?

“Lagaigh” has three alternative meanings. The most common comes first.

to weaken
To make something or someone weaker, or to become weaker.Also: enfeeble, grow weak, debilitate.
2 other meanings: slacken or dilute
2to slacken
To loosen or relax something, or to lessen in force or intensity.Also: loosen, relax, abate, ease.
3to dilute
To make a liquid weaker, for example by adding water.Also: water down, thin.

“Lagaigh” in the different tenses

Every form follows An Caighdeán Oifigiúil.

Aimsir Chaite (Past)

PersonPositiveNegativeQuestion
mé (I)Lagaigh méI weakenedNíor lagaigh méI did not weakenAr lagaigh mé?Did I weaken?
tú (you)Lagaigh túYou weakenedNíor lagaigh túYou did not weakenAr lagaigh tú?Did you weaken?
sé / sí (he / she)Lagaigh sé / síHe weakenedNíor lagaigh sé / síHe did not weakenAr lagaigh sé / sí?Did he weaken?
sinn (we)LagaíomarWe weakenedNíor lagaíomarWe did not weakenAr lagaíomar?Did we weaken?
sibh (you, plural)Lagaigh sibhYou weakenedNíor lagaigh sibhYou did not weakenAr lagaigh sibh?Did you weaken?
siad (they)Lagaigh siadThey weakenedNíor lagaigh siadThey did not weakenAr lagaigh siad?Did they weaken?
saorbhriathar (autonomous)LagaíodhNíor lagaíodhAr lagaíodh?

Aimsir Láithreach (Present)

PersonPositiveNegativeQuestion
mé (I)LagaímI weakenNí lagaímI do not weakenAn lagaím?Do I weaken?
tú (you)Lagaíonn túYou weakenNí lagaíonn túYou do not weakenAn lagaíonn tú?Do you weaken?
sé / sí (he / she)Lagaíonn sé / síHe weakensNí lagaíonn sé / síHe does not weakenAn lagaíonn sé / sí?Does he weaken?
sinn (we)LagaímidWe weakenNí lagaímidWe do not weakenAn lagaímid?Do we weaken?
sibh (you, plural)Lagaíonn sibhYou weakenNí lagaíonn sibhYou do not weakenAn lagaíonn sibh?Do you weaken?
siad (they)Lagaíonn siadThey weakenNí lagaíonn siadThey do not weakenAn lagaíonn siad?Do they weaken?
saorbhriathar (autonomous)LagaítearNí lagaítearAn lagaítear?

Aimsir Fháistineach (Future)

PersonPositiveNegativeQuestion
mé (I)Lagóidh méI will weakenNí lagóidh méI will not weakenAn lagóidh mé?Will I weaken?
tú (you)Lagóidh túYou will weakenNí lagóidh túYou will not weakenAn lagóidh tú?Will you weaken?
sé / sí (he / she)Lagóidh sé / síHe will weakenNí lagóidh sé / síHe will not weakenAn lagóidh sé / sí?Will he weaken?
sinn (we)LagóimidWe will weakenNí lagóimidWe will not weakenAn lagóimid?Will we weaken?
sibh (you, plural)Lagóidh sibhYou will weakenNí lagóidh sibhYou will not weakenAn lagóidh sibh?Will you weaken?
siad (they)Lagóidh siadThey will weakenNí lagóidh siadThey will not weakenAn lagóidh siad?Will they weaken?
saorbhriathar (autonomous)LagófarNí lagófarAn lagófar?

Modh Coinníollach (Conditional)

PersonPositiveNegativeQuestion
mé (I)LagóinnI would weakenNí lagóinnI would not weakenAn lagóinn?Would I weaken?
tú (you)LagófáYou would weakenNí lagófáYou would not weakenAn lagófá?Would you weaken?
sé / sí (he / she)Lagódh sé / síHe would weakenNí lagódh sé / síHe would not weakenAn lagódh sé / sí?Would he weaken?
sinn (we)LagóimisWe would weakenNí lagóimisWe would not weakenAn lagóimis?Would we weaken?
sibh (you, plural)Lagódh sibhYou would weakenNí lagódh sibhYou would not weakenAn lagódh sibh?Would you weaken?
siad (they)LagóidísThey would weakenNí lagóidísThey would not weakenAn lagóidís?Would they weaken?
saorbhriathar (autonomous)LagófaíNí lagófaíAn lagófaí?

“Lagaigh” in a sentence: Irish examples

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

Lagaigh an tinneas go mór é.
The illness weakened him greatly.
Lagaíonn an teas mé gach samhradh.
The heat weakens me every summer.
Lagóidh an ghaoth roimh mhaidin.
The wind will ease before morning.
Lagódh sin a sheasamh sa chomórtas.
That would weaken his position in the competition.
Níor lagaigh a misneach riamh.
Her courage never weakened.
Lagaigh an tinneas a croí.
The illness weakened her heart.

Other verbs in Irish

More everyday Irish verbs to learn next.

To weaken in Irish: frequently asked questions

What is the Irish for to weaken?

The Irish for to weaken is lagaigh (pronounced “LAG-ee”). It is a second-conjugation verb; the verbal noun is lagú.

What is the verbal noun of lagaigh?

The verbal noun of lagaigh is lagú, used after ag for the continuous: ag lagú (weakening). The verbal adjective is lagaithe.

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

Past: Lagaigh mé; negative Níor lagaigh mé; question Ar lagaigh mé?. Future: Lagóidh mé; negative Ní lagóidh mé; question An lagóidh mé?.

What is the modh coinníollach of lagaigh?

The conditional (modh coinníollach) first person is Lagóinn (I would weaken); negative Ní lagóinn; question An lagóinn?.

Does lagaigh have more than one meaning?

Yes. Lagaigh can mean to weaken, to slacken or to dilute, depending on context; the first is the most common.

What is the opposite of 'lagaigh'?

The opposite is 'neartaigh' (strengthen), as in 'Neartaigh an aclaíocht é' (Exercise strengthened him).

Is 'lagaigh' related to the adjective 'lag'?

Yes, 'lagaigh' comes from 'lag' (weak), so 'lagú' means weakening, and 'lagaithe' means weakened.

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