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cydweithio

to cooperate

"cydweithio" means "to cooperate" in Welsh. Full conjugation table with present, imperfect, preterite, future, conditional, and imperative tenses.

Present

Presennol

PersonForm
I (fi)cydweithiaf
You sg. (ti)cydweithi
He/She (fe/hi)cydweithio
We (ni)cydweithiwn
You pl. (chi)cydweithiwch
They (nhw)cydweithiant
Impersonalcydweithir

Imperfect

Amherffaith

PersonForm
I (fi)cydweithiwn
You sg. (ti)cydweithit
He/She (fe/hi)cydweithiai
We (ni)cydweithiem
You pl. (chi)cydweithiech
They (nhw)cydweithient
Impersonalcydweithid

Preterite

Gorffennol

PersonForm
I (fi)cydweithiais
You sg. (ti)cydweithiaist
He/She (fe/hi)cydweithiodd
We (ni)cydweithiasom
You pl. (chi)cydweithiasoch
They (nhw)cydweithiasant
Impersonalcydweithiwyd

Pluperfect

Gorberffaith

PersonForm
I (fi)cydweithiaswn
You sg. (ti)cydweithiasit
He/She (fe/hi)cydweithiasai
We (ni)cydweithiasem
You pl. (chi)cydweithiasech
They (nhw)cydweithiasent
Impersonalcydweithiasid

Future

Dyfodol

PersonForm
I (fi)cydweithia i
You sg. (ti)cydweithi di
He/She (fe/hi)hi o
We (ni)cydweithiwn ni
You pl. (chi)cydweithiwch chi
They (nhw)cydweithian nhw

Conditional

Amodol

PersonForm
I (fi)cydweithiwn
You sg. (ti)cydweithit
He/She (fe/hi)hi
We (ni)cydweithiem
You pl. (chi)cydweithiech
They (nhw)cydweithient
Impersonalcydweithid

Imperative

Gorchmynnol

PersonForm
I (fi)-
You sg. (ti)cydweithia
He/She (fe/hi)cydweithied
We (ni)cydweithiwn
You pl. (chi)cydweithiwch
They (nhw)cydweithient
Impersonalcydweithier

Example sentences

Sut mae Llywodraeth Cymru yn cydweithio gydag awdurdodau lleol i wella diogelwch cynghorwyr?

How is the Welsh Government working with local authorities to improve the safety of councillors?

B1

Ar y fframwaith statudol y byddwn yn ei ddatblygu—mae'r ymgynghoriad wedi'i gau ar hwnnw ac rydym yn ystyried barn pobl—rwy'n gobeithio y bydd hynny'n arwain at ddull mwy strategol ledled Cymru, gydag awdurdodau lleol yn cydweithio â'r trydydd sector.

On the statutory framework that we will be developing—the consultation is closed on that and we're taking account of people’s views—I hope that that will lead to a more strategic approach across Wales, with local authorities working together with the third sector.

C1

Mae cwmnïau gweithredu trenau a chwmnïau gweithredu rheilffyrdd yn cydweithio i asesu sut y bydd newid hinsawdd yn effeithio ar y DU yn y blynyddoedd i ddod.

Train operating companies and rail operating companies are working together to assess how climate change will impact the UK in the years to come.

B2

Mae'r hosbis wedi cadarnhau bod pob un claf yn cael asesiad unigol gan y tîm clinigol, yn cydweithio gyda'r meddygon teulu a'r bwrdd iechyd, gyda chefnogaeth ychwanegol oddi wrth staff yr hosbis wrth fynd trwy'r cyfnod sydd o'u blaenau nhw.

The hospice has confirmed that all patients will have an individual assessment from the clinical team, in collaboration with GPs and the health board, with additional support from hospice staff while going through this period ahead of them.

C1

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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