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

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

How to say “to radiate” in Irish

Irish:
radaigh
English:
to radiate
Word type:
verb, second-conjugation
Verbal noun:
radú (ag radú, radiating)
Verbal adjective:
radaithe
Pronunciation:
“RAD-ee”  /ˈɾˠad̪ˠiː/

What does “radaigh” mean?

to radiate
To send out energy such as heat, light or other rays from a source.Also: emit, give off, send out rays.

“Radaigh” in the different tenses

Every form follows An Caighdeán Oifigiúil.

Aimsir Chaite (Past)

PersonPositiveNegativeQuestion
mé (I)Radaigh méI radiatedNíor radaigh méI did not radiateAr radaigh mé?Did I radiate?
tú (you)Radaigh túYou radiatedNíor radaigh túYou did not radiateAr radaigh tú?Did you radiate?
sé / sí (he / she)Radaigh sé / síHe radiatedNíor radaigh sé / síHe did not radiateAr radaigh sé / sí?Did he radiate?
sinn (we)RadaíomarWe radiatedNíor radaíomarWe did not radiateAr radaíomar?Did we radiate?
sibh (you, plural)Radaigh sibhYou radiatedNíor radaigh sibhYou did not radiateAr radaigh sibh?Did you radiate?
siad (they)Radaigh siadThey radiatedNíor radaigh siadThey did not radiateAr radaigh siad?Did they radiate?
saorbhriathar (autonomous)RadaíodhNíor radaíodhAr radaíodh?

Aimsir Láithreach (Present)

PersonPositiveNegativeQuestion
mé (I)RadaímI radiateNí radaímI do not radiateAn radaím?Do I radiate?
tú (you)Radaíonn túYou radiateNí radaíonn túYou do not radiateAn radaíonn tú?Do you radiate?
sé / sí (he / she)Radaíonn sé / síHe radiatesNí radaíonn sé / síHe does not radiateAn radaíonn sé / sí?Does he radiate?
sinn (we)RadaímidWe radiateNí radaímidWe do not radiateAn radaímid?Do we radiate?
sibh (you, plural)Radaíonn sibhYou radiateNí radaíonn sibhYou do not radiateAn radaíonn sibh?Do you radiate?
siad (they)Radaíonn siadThey radiateNí radaíonn siadThey do not radiateAn radaíonn siad?Do they radiate?
saorbhriathar (autonomous)RadaítearNí radaítearAn radaítear?

Aimsir Fháistineach (Future)

PersonPositiveNegativeQuestion
mé (I)Radóidh méI will radiateNí radóidh méI will not radiateAn radóidh mé?Will I radiate?
tú (you)Radóidh túYou will radiateNí radóidh túYou will not radiateAn radóidh tú?Will you radiate?
sé / sí (he / she)Radóidh sé / síHe will radiateNí radóidh sé / síHe will not radiateAn radóidh sé / sí?Will he radiate?
sinn (we)RadóimidWe will radiateNí radóimidWe will not radiateAn radóimid?Will we radiate?
sibh (you, plural)Radóidh sibhYou will radiateNí radóidh sibhYou will not radiateAn radóidh sibh?Will you radiate?
siad (they)Radóidh siadThey will radiateNí radóidh siadThey will not radiateAn radóidh siad?Will they radiate?
saorbhriathar (autonomous)RadófarNí radófarAn radófar?

Modh Coinníollach (Conditional)

PersonPositiveNegativeQuestion
mé (I)RadóinnI would radiateNí radóinnI would not radiateAn radóinn?Would I radiate?
tú (you)RadófáYou would radiateNí radófáYou would not radiateAn radófá?Would you radiate?
sé / sí (he / she)Radódh sé / síHe would radiateNí radódh sé / síHe would not radiateAn radódh sé / sí?Would he radiate?
sinn (we)RadóimisWe would radiateNí radóimisWe would not radiateAn radóimis?Would we radiate?
sibh (you, plural)Radódh sibhYou would radiateNí radódh sibhYou would not radiateAn radódh sibh?Would you radiate?
siad (they)RadóidísThey would radiateNí radóidísThey would not radiateAn radóidís?Would they radiate?
saorbhriathar (autonomous)RadófaíNí radófaíAn radófaí?

“Radaigh” in a sentence: Irish examples

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

Radaigh an tine teas ar fud an tseomra.
The fire radiated heat throughout the room.
Radaíonn an ghrian solas agus teas.
The sun radiates light and heat.
Radóidh an téitheoir teas go luath.
The heater will radiate heat soon.
Radódh an miotal teas dá dtéifí é.
The metal would radiate heat if it were heated.
Ní radaíonn an t-ábhar seo aon fhuinneamh.
This material does not radiate any energy.
An radaíonn 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 radaigh (pronounced “RAD-ee”). It is a second-conjugation verb; the verbal noun is radú.

What is the verbal noun of radaigh?

The verbal noun of radaigh is radú, used after ag for the continuous: ag radú (radiating). The verbal adjective is radaithe.

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

Past: Radaigh mé; negative Níor radaigh mé; question Ar radaigh mé?. Future: Radóidh mé; negative Ní radóidh mé; question An radóidh mé?.

What is the modh coinníollach of radaigh?

The conditional (modh coinníollach) first person is Radóinn (I would radiate); negative Ní radóinn; question An radóinn?.

What is the noun for radiation related to 'radaigh'?

The verbal noun 'radú' means the act of radiating, while 'radaíocht' is the usual word for radiation as a phenomenon.

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