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To pollute in Irish (bréan): Meaning, Conjugation, Examples

Other uses of ‘bréan’: putrefy · sicken · foul (adjective)

The Irish for to pollute is bréan; ag bréanadh is polluting.
Updated October 2026Report a mistake

How to say “to pollute” in Irish

Irish:
bréan
English:
to pollute, putrefy, sicken
Word type:
verb, first-conjugation
Verbal noun:
bréanadh (ag bréanadh, polluting)
Verbal adjective:
bréanta
Pronunciation:
“brayn”  /bʲɾʲeːnˠ/

What does “bréan” mean?

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

to pollute
To make something dirty, foul or contaminated, such as water or air.Also: foul, contaminate, befoul.
2 other meanings: putrefy or sicken
2to putrefy
To go rotten and start to smell bad.Also: rot, go bad, become foul, stink.
3to sicken
To make someone fed up or disgusted with something (often 'bréan de', be sick of).Also: disgust, make fed up.

Other Irish verbs for to pollute: truailligh (pollute)

Other entries for “bréan”

The same spelling has its own page as:

“Bréan” in the different tenses

Every form follows An Caighdeán Oifigiúil.

Aimsir Chaite (Past)

PersonPositiveNegativeQuestion
mé (I)Bhréan méI pollutedNíor bhréan méI did not polluteAr bhréan mé?Did I pollute?
tú (you)Bhréan túYou pollutedNíor bhréan túYou did not polluteAr bhréan tú?Did you pollute?
sé / sí (he / she)Bhréan sé / síHe pollutedNíor bhréan sé / síHe did not polluteAr bhréan sé / sí?Did he pollute?
sinn (we)BhréanamarWe pollutedNíor bhréanamarWe did not polluteAr bhréanamar?Did we pollute?
sibh (you, plural)Bhréan sibhYou pollutedNíor bhréan sibhYou did not polluteAr bhréan sibh?Did you pollute?
siad (they)Bhréan siadThey pollutedNíor bhréan siadThey did not polluteAr bhréan siad?Did they pollute?
saorbhriathar (autonomous)BréanadhNíor bréanadhAr bréanadh?

Aimsir Láithreach (Present)

PersonPositiveNegativeQuestion
mé (I)BréanaimI polluteNí bhréanaimI do not polluteAn mbréanaim?Do I pollute?
tú (you)Bréanann túYou polluteNí bhréanann túYou do not polluteAn mbréanann tú?Do you pollute?
sé / sí (he / she)Bréanann sé / síHe pollutesNí bhréanann sé / síHe does not polluteAn mbréanann sé / sí?Does he pollute?
sinn (we)BréanaimidWe polluteNí bhréanaimidWe do not polluteAn mbréanaimid?Do we pollute?
sibh (you, plural)Bréanann sibhYou polluteNí bhréanann sibhYou do not polluteAn mbréanann sibh?Do you pollute?
siad (they)Bréanann siadThey polluteNí bhréanann siadThey do not polluteAn mbréanann siad?Do they pollute?
saorbhriathar (autonomous)BréantarNí bhréantarAn mbréantar?

Aimsir Fháistineach (Future)

PersonPositiveNegativeQuestion
mé (I)Bréanfaidh méI will polluteNí bhréanfaidh méI will not polluteAn mbréanfaidh mé?Will I pollute?
tú (you)Bréanfaidh túYou will polluteNí bhréanfaidh túYou will not polluteAn mbréanfaidh tú?Will you pollute?
sé / sí (he / she)Bréanfaidh sé / síHe will polluteNí bhréanfaidh sé / síHe will not polluteAn mbréanfaidh sé / sí?Will he pollute?
sinn (we)BréanfaimidWe will polluteNí bhréanfaimidWe will not polluteAn mbréanfaimid?Will we pollute?
sibh (you, plural)Bréanfaidh sibhYou will polluteNí bhréanfaidh sibhYou will not polluteAn mbréanfaidh sibh?Will you pollute?
siad (they)Bréanfaidh siadThey will polluteNí bhréanfaidh siadThey will not polluteAn mbréanfaidh siad?Will they pollute?
saorbhriathar (autonomous)BréanfarNí bhréanfarAn mbréanfar?

Modh Coinníollach (Conditional)

PersonPositiveNegativeQuestion
mé (I)BhréanfainnI would polluteNí bhréanfainnI would not polluteAn mbréanfainn?Would I pollute?
tú (you)BhréanfáYou would polluteNí bhréanfáYou would not polluteAn mbréanfá?Would you pollute?
sé / sí (he / she)Bhréanfadh sé / síHe would polluteNí bhréanfadh sé / síHe would not polluteAn mbréanfadh sé / sí?Would he pollute?
sinn (we)BhréanfaimisWe would polluteNí bhréanfaimisWe would not polluteAn mbréanfaimis?Would we pollute?
sibh (you, plural)Bhréanfadh sibhYou would polluteNí bhréanfadh sibhYou would not polluteAn mbréanfadh sibh?Would you pollute?
siad (they)BhréanfaidísThey would polluteNí bhréanfaidísThey would not polluteAn mbréanfaidís?Would they pollute?
saorbhriathar (autonomous)BhréanfaíNí bhréanfaíAn mbréanfaí?

“Bréan” in a sentence: Irish examples

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

Bhréan an mhonarcha an abhainn.
The factory polluted the river.
Bréanann an trácht an t-aer sa chathair.
The traffic pollutes the air in the city.
Bréanfaidh an fheoil mura gcuirfear sa chuisneoir í.
The meat will go off if it isn't put in the fridge.
Bhréanfadh an ceimiceán sin an t-uisce ar fad.
That chemical would pollute all the water.
Níor bhréan an t-iasc fós.
The fish hasn't gone bad yet.
Ar bhréan an ola an trá?
Did the oil pollute the beach?

Other verbs in Irish

More everyday Irish verbs to learn next.

To pollute in Irish: frequently asked questions

What is the Irish for to pollute?

The Irish for to pollute is bréan (pronounced “brayn”). It is a first-conjugation verb; the verbal noun is bréanadh.

What is the verbal noun of bréan?

The verbal noun of bréan is bréanadh, used after ag for the continuous: ag bréanadh (polluting). The verbal adjective is bréanta.

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

Past: Bhréan mé; negative Níor bhréan mé; question Ar bhréan mé?. Future: Bréanfaidh mé; negative Ní bhréanfaidh mé; question An mbréanfaidh mé?.

What is the modh coinníollach of bréan?

The conditional (modh coinníollach) first person is Bhréanfainn (I would pollute); negative Ní bhréanfainn; question An mbréanfainn?.

Does bréan have more than one meaning?

Yes. Bréan can mean to pollute, to putrefy or to sicken, depending on context; the first is the most common.

What is the difference between 'bréan' and 'truailligh'?

'Truailligh' is the usual word for environmental pollution, as in 'truailliú aeir' (air pollution); 'bréan' stresses making something foul or stinking.

Is 'bréan' also an adjective?

Yes, 'bréan' commonly means foul or rotten, as in 'boladh bréan' (a foul smell), and 'tá mé bréan de' means I am sick of it.

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