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To radiate in Irish (gathaigh): Meaning, Conjugation, Examples

Other uses of ‘gathaigh’: irradiate

The Irish for to radiate is gathaigh; ag gathú is radiating.
Updated October 2026Report a mistake

How to say “to radiate” in Irish

Irish:
gathaigh
English:
to radiate, irradiate
Word type:
verb, second-conjugation
Verbal noun:
gathú (ag gathú, radiating)
Verbal adjective:
gathaithe
Pronunciation:
“GAH-hee”  /ɡahiː/

What does “gathaigh” mean?

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

to radiate
To send out rays, such as light or heat, from a central point.Also: emit rays, shine out.
1 other meaning: irradiate
2to irradiate
To expose something to rays or radiation.Also: expose to radiation, treat with rays.

“Gathaigh” in the different tenses

Every form follows An Caighdeán Oifigiúil.

Aimsir Chaite (Past)

PersonPositiveNegativeQuestion
mé (I)Ghathaigh méI radiatedNíor ghathaigh méI did not radiateAr ghathaigh mé?Did I radiate?
tú (you)Ghathaigh túYou radiatedNíor ghathaigh túYou did not radiateAr ghathaigh tú?Did you radiate?
sé / sí (he / she)Ghathaigh sé / síHe radiatedNíor ghathaigh sé / síHe did not radiateAr ghathaigh sé / sí?Did he radiate?
sinn (we)GhathaíomarWe radiatedNíor ghathaíomarWe did not radiateAr ghathaíomar?Did we radiate?
sibh (you, plural)Ghathaigh sibhYou radiatedNíor ghathaigh sibhYou did not radiateAr ghathaigh sibh?Did you radiate?
siad (they)Ghathaigh siadThey radiatedNíor ghathaigh siadThey did not radiateAr ghathaigh siad?Did they radiate?
saorbhriathar (autonomous)GathaíodhNíor gathaíodhAr gathaíodh?

Aimsir Láithreach (Present)

PersonPositiveNegativeQuestion
mé (I)GathaímI radiateNí ghathaímI do not radiateAn ngathaím?Do I radiate?
tú (you)Gathaíonn túYou radiateNí ghathaíonn túYou do not radiateAn ngathaíonn tú?Do you radiate?
sé / sí (he / she)Gathaíonn sé / síHe radiatesNí ghathaíonn sé / síHe does not radiateAn ngathaíonn sé / sí?Does he radiate?
sinn (we)GathaímidWe radiateNí ghathaímidWe do not radiateAn ngathaímid?Do we radiate?
sibh (you, plural)Gathaíonn sibhYou radiateNí ghathaíonn sibhYou do not radiateAn ngathaíonn sibh?Do you radiate?
siad (they)Gathaíonn siadThey radiateNí ghathaíonn siadThey do not radiateAn ngathaíonn siad?Do they radiate?
saorbhriathar (autonomous)GathaítearNí ghathaítearAn ngathaítear?

Aimsir Fháistineach (Future)

PersonPositiveNegativeQuestion
mé (I)Gathóidh méI will radiateNí ghathóidh méI will not radiateAn ngathóidh mé?Will I radiate?
tú (you)Gathóidh túYou will radiateNí ghathóidh túYou will not radiateAn ngathóidh tú?Will you radiate?
sé / sí (he / she)Gathóidh sé / síHe will radiateNí ghathóidh sé / síHe will not radiateAn ngathóidh sé / sí?Will he radiate?
sinn (we)GathóimidWe will radiateNí ghathóimidWe will not radiateAn ngathóimid?Will we radiate?
sibh (you, plural)Gathóidh sibhYou will radiateNí ghathóidh sibhYou will not radiateAn ngathóidh sibh?Will you radiate?
siad (they)Gathóidh siadThey will radiateNí ghathóidh siadThey will not radiateAn ngathóidh siad?Will they radiate?
saorbhriathar (autonomous)GathófarNí ghathófarAn ngathófar?

Modh Coinníollach (Conditional)

PersonPositiveNegativeQuestion
mé (I)GhathóinnI would radiateNí ghathóinnI would not radiateAn ngathóinn?Would I radiate?
tú (you)GhathófáYou would radiateNí ghathófáYou would not radiateAn ngathófá?Would you radiate?
sé / sí (he / she)Ghathódh sé / síHe would radiateNí ghathódh sé / síHe would not radiateAn ngathódh sé / sí?Would he radiate?
sinn (we)GhathóimisWe would radiateNí ghathóimisWe would not radiateAn ngathóimis?Would we radiate?
sibh (you, plural)Ghathódh sibhYou would radiateNí ghathódh sibhYou would not radiateAn ngathódh sibh?Would you radiate?
siad (they)GhathóidísThey would radiateNí ghathóidísThey would not radiateAn ngathóidís?Would they radiate?
saorbhriathar (autonomous)GhathófaíNí ghathófaíAn ngathófaí?

“Gathaigh” in a sentence: Irish examples

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

Ghathaigh an ghrian teas ar an talamh inné.
The sun radiated heat onto the ground yesterday.
Gathaíonn an tine teas tríd an seomra.
The fire radiates heat through the room.
Gathóidh an lampa solas láidir.
The lamp will radiate a strong light.
Ghathódh an miotal teas dá dtéifí é.
The metal would radiate heat if it were heated.
Níor ghathaigh an réalta mórán solais.
The star did not radiate much light.
An ngathaíonn an chloch teas san oíche?
Does the stone radiate heat at night?

Other verbs in Irish

More everyday Irish verbs to learn next.

To radiate in Irish: frequently asked questions

What is the Irish for to radiate?

The Irish for to radiate is gathaigh (pronounced “GAH-hee”). It is a second-conjugation verb; the verbal noun is gathú.

What is the verbal noun of gathaigh?

The verbal noun of gathaigh is gathú, used after ag for the continuous: ag gathú (radiating). The verbal adjective is gathaithe.

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

Past: Ghathaigh mé; negative Níor ghathaigh mé; question Ar ghathaigh mé?. Future: Gathóidh mé; negative Ní ghathóidh mé; question An ngathóidh mé?.

What is the modh coinníollach of gathaigh?

The conditional (modh coinníollach) first person is Ghathóinn (I would radiate); negative Ní ghathóinn; question An ngathóinn?.

Does gathaigh have more than one meaning?

Yes. Gathaigh can mean to radiate or to irradiate, depending on context; the first is the most common.

Where does 'gathaigh' come from?

It is formed from 'ga', plural 'gathanna', meaning a ray or beam, so 'gathaigh' means to send out rays.

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