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To insulate in Irish (teasdíon): Meaning, Conjugation, Examples

The Irish for to insulate is teasdíon; ag teasdíonadh is insulating.
Updated October 2026Report a mistake

How to say “to insulate” in Irish

Irish:
teasdíon
English:
to insulate
Word type:
verb, first-conjugation
Verbal noun:
teasdíonadh (ag teasdíonadh, insulating)
Verbal adjective:
teasdíonta
Pronunciation:
“TASS-jee-un”  /ˈtʲasˌdʲiːənˠ/

What does “teasdíon” mean?

to insulate
To protect something from loss of heat by covering or lining it with a material that keeps warmth in.Also: heat-insulate, lag, insulate against heat loss.

“Teasdíon” in the different tenses

Every form follows An Caighdeán Oifigiúil.

Aimsir Chaite (Past)

PersonPositiveNegativeQuestion
mé (I)Theasdíon méI insulatedNíor theasdíon méI did not insulateAr theasdíon mé?Did I insulate?
tú (you)Theasdíon túYou insulatedNíor theasdíon túYou did not insulateAr theasdíon tú?Did you insulate?
sé / sí (he / she)Theasdíon sé / síHe insulatedNíor theasdíon sé / síHe did not insulateAr theasdíon sé / sí?Did he insulate?
sinn (we)TheasdíonamarWe insulatedNíor theasdíonamarWe did not insulateAr theasdíonamar?Did we insulate?
sibh (you, plural)Theasdíon sibhYou insulatedNíor theasdíon sibhYou did not insulateAr theasdíon sibh?Did you insulate?
siad (they)Theasdíon siadThey insulatedNíor theasdíon siadThey did not insulateAr theasdíon siad?Did they insulate?
saorbhriathar (autonomous)TeasdíonadhNíor teasdíonadhAr teasdíonadh?

Aimsir Láithreach (Present)

PersonPositiveNegativeQuestion
mé (I)TeasdíonaimI insulateNí theasdíonaimI do not insulateAn dteasdíonaim?Do I insulate?
tú (you)Teasdíonann túYou insulateNí theasdíonann túYou do not insulateAn dteasdíonann tú?Do you insulate?
sé / sí (he / she)Teasdíonann sé / síHe insulatesNí theasdíonann sé / síHe does not insulateAn dteasdíonann sé / sí?Does he insulate?
sinn (we)TeasdíonaimidWe insulateNí theasdíonaimidWe do not insulateAn dteasdíonaimid?Do we insulate?
sibh (you, plural)Teasdíonann sibhYou insulateNí theasdíonann sibhYou do not insulateAn dteasdíonann sibh?Do you insulate?
siad (they)Teasdíonann siadThey insulateNí theasdíonann siadThey do not insulateAn dteasdíonann siad?Do they insulate?
saorbhriathar (autonomous)TeasdíontarNí theasdíontarAn dteasdíontar?

Aimsir Fháistineach (Future)

PersonPositiveNegativeQuestion
mé (I)Teasdíonfaidh méI will insulateNí theasdíonfaidh méI will not insulateAn dteasdíonfaidh mé?Will I insulate?
tú (you)Teasdíonfaidh túYou will insulateNí theasdíonfaidh túYou will not insulateAn dteasdíonfaidh tú?Will you insulate?
sé / sí (he / she)Teasdíonfaidh sé / síHe will insulateNí theasdíonfaidh sé / síHe will not insulateAn dteasdíonfaidh sé / sí?Will he insulate?
sinn (we)TeasdíonfaimidWe will insulateNí theasdíonfaimidWe will not insulateAn dteasdíonfaimid?Will we insulate?
sibh (you, plural)Teasdíonfaidh sibhYou will insulateNí theasdíonfaidh sibhYou will not insulateAn dteasdíonfaidh sibh?Will you insulate?
siad (they)Teasdíonfaidh siadThey will insulateNí theasdíonfaidh siadThey will not insulateAn dteasdíonfaidh siad?Will they insulate?
saorbhriathar (autonomous)TeasdíonfarNí theasdíonfarAn dteasdíonfar?

Modh Coinníollach (Conditional)

PersonPositiveNegativeQuestion
mé (I)TheasdíonfainnI would insulateNí theasdíonfainnI would not insulateAn dteasdíonfainn?Would I insulate?
tú (you)TheasdíonfáYou would insulateNí theasdíonfáYou would not insulateAn dteasdíonfá?Would you insulate?
sé / sí (he / she)Theasdíonfadh sé / síHe would insulateNí theasdíonfadh sé / síHe would not insulateAn dteasdíonfadh sé / sí?Would he insulate?
sinn (we)TheasdíonfaimisWe would insulateNí theasdíonfaimisWe would not insulateAn dteasdíonfaimis?Would we insulate?
sibh (you, plural)Theasdíonfadh sibhYou would insulateNí theasdíonfadh sibhYou would not insulateAn dteasdíonfadh sibh?Would you insulate?
siad (they)TheasdíonfaidísThey would insulateNí theasdíonfaidísThey would not insulateAn dteasdíonfaidís?Would they insulate?
saorbhriathar (autonomous)TheasdíonfaíNí theasdíonfaíAn dteasdíonfaí?

“Teasdíon” in a sentence: Irish examples

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

Theasdíon siad an t-áiléar anuraidh.
They insulated the attic last year.
Teasdíonann an t-ábhar seo an teach go maith.
This material insulates the house well.
Teasdíonfaidh an tógálaí na ballaí amárach.
The builder will insulate the walls tomorrow.
Theasdíonfainn an píopa dá mbeadh an t-am agam.
I would insulate the pipe if I had the time.
Níor theasdíon siad an t-umar uisce fós.
They haven't insulated the water tank yet.
Ar theasdíon tú an díon?
Did you insulate the roof?

Other verbs in Irish

More everyday Irish verbs to learn next.

To insulate in Irish: frequently asked questions

What is the Irish for to insulate?

The Irish for to insulate is teasdíon (pronounced “TASS-jee-un”). It is a first-conjugation verb; the verbal noun is teasdíonadh.

What is the verbal noun of teasdíon?

The verbal noun of teasdíon is teasdíonadh, used after ag for the continuous: ag teasdíonadh (insulating). The verbal adjective is teasdíonta.

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

Past: Theasdíon mé; negative Níor theasdíon mé; question Ar theasdíon mé?. Future: Teasdíonfaidh mé; negative Ní theasdíonfaidh mé; question An dteasdíonfaidh mé?.

What is the modh coinníollach of teasdíon?

The conditional (modh coinníollach) first person is Theasdíonfainn (I would insulate); negative Ní theasdíonfainn; question An dteasdíonfainn?.

What is the difference between 'teasdíon' and 'insligh'?

'Teasdíon' means to insulate against heat loss (thermal insulation), while 'insligh' is the general word for insulate, used especially for electrical insulation.

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