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diolch

to thank [with i ‘someone’]

"diolch" means "to thank [with i ‘someone’]" in Welsh. Full conjugation table with present, imperfect, preterite, future, conditional, and imperative tenses.

Present

Presennol

PersonForm
I (fi)diolchaf
You sg. (ti)diolchi
He/She (fe/hi)diolch
We (ni)diolchwn
You pl. (chi)diolchwch
They (nhw)diolchant
Impersonaldiolchir

Imperfect

Amherffaith

PersonForm
I (fi)diolchwn
You sg. (ti)diolchit
He/She (fe/hi)diolchai
We (ni)diolchem
You pl. (chi)diolchech
They (nhw)diolchent
Impersonaldiolchid

Preterite

Gorffennol

PersonForm
I (fi)diolchais
You sg. (ti)diolchaist
He/She (fe/hi)diolchodd
We (ni)diolchasom
You pl. (chi)diolchasoch
They (nhw)diolchasant
Impersonaldiolchwyd

Pluperfect

Gorberffaith

PersonForm
I (fi)diolchaswn
You sg. (ti)diolchasit
He/She (fe/hi)diolchasai
We (ni)diolchasem
You pl. (chi)diolchasech
They (nhw)diolchasent
Impersonaldiolchasid

Future

Dyfodol

PersonForm
I (fi)diolchaf i
You sg. (ti)diolchi di
He/She (fe/hi)hi o
We (ni)diolchwn ni
You pl. (chi)diolchwch chi
They (nhw)diolchan nhw

Conditional

Amodol

PersonForm
I (fi)diolchwn
You sg. (ti)diolchit
He/She (fe/hi)diolchai
We (ni)diolchem
You pl. (chi)diolchech
They (nhw)diolchent
Impersonaldiolchid

Imperative

Gorchmynnol

PersonForm
I (fi)-
You sg. (ti)diolcha
He/She (fe/hi)diolched
We (ni)diolchwn
You pl. (chi)diolchwch
They (nhw)diolchent
Impersonaldiolcher

Example sentences

Diolch.

Thanks.

A1

Diolch!

Thank you!

A1

Diolch, Yukina.

Thanks, Yukina.

A1

Diolch am edrych ar ôl y plant.

Thanks for taking care of the kids.

A1

Further reading

Welsh Verb Conjugation — All Tenses, Full Tables, Clear Patterns →The Welsh Verb Bod (To Be) — Every Form, Every Tense →Welsh Pronunciation — It's Actually Easier Than English →Best Apps to Learn Welsh (2026) →Browse all Welsh verb conjugations →

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Other Welsh verbs

euro

to gild

uno

to join

duo

to become black

mela

to gather nectar to make honey

dal

to catch

trio

to try

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