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sefydlu

to establish

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

Present

Presennol

PersonForm
I (fi)sefydlaf
You sg. (ti)sefydli
He/She (fe/hi)sefydla
We (ni)sefydlwn
You pl. (chi)sefydlwch
They (nhw)sefydlant
Impersonalsefydlir

Imperfect

Amherffaith

PersonForm
I (fi)sefydlwn
You sg. (ti)sefydlit
He/She (fe/hi)sefydlai
We (ni)sefydlem
You pl. (chi)sefydlech
They (nhw)sefydlent
Impersonalsefydlid

Preterite

Gorffennol

PersonForm
I (fi)sefydlais
You sg. (ti)sefydlaist
He/She (fe/hi)sefydlodd
We (ni)sefydlasom
You pl. (chi)sefydlasoch
They (nhw)sefydlasant
Impersonalsefydlwyd

Pluperfect

Gorberffaith

PersonForm
I (fi)sefydlaswn
You sg. (ti)sefydlasit
He/She (fe/hi)sefydlasai
We (ni)sefydlasem
You pl. (chi)sefydlasech
They (nhw)sefydlasent
Impersonalsefydlasid

Future

Dyfodol

PersonForm
I (fi)sefydla i
You sg. (ti)sefydli di
He/She (fe/hi)hi o
We (ni)sefydlwn ni
You pl. (chi)sefydlwch chi
They (nhw)sefydlant nhw

Conditional

Amodol

PersonForm
I (fi)sefydlwn
You sg. (ti)sefydlit
He/She (fe/hi)hi
We (ni)sefydlem
You pl. (chi)sefydlech
They (nhw)sefydlent
Impersonalsefydlid

Imperative

Gorchmynnol

PersonForm
I (fi)-
You sg. (ti)sefydla
He/She (fe/hi)sefydled
We (ni)sefydlwn
You pl. (chi)sefydlwch
They (nhw)sefydlent
Impersonalsefydler

Example sentences

Ar hyn o bryd, rydym yn dadansoddi'r wybodaeth honno, ac mae fy swyddogion yn sefydlu gweithgor ar gyllid arloesol i drafod yr opsiynau ar gyfer cyflwyno ffynonellau cyllid amgen.

We are currently analysing those returns and my officials are establishing a working group on innovative finance to discuss the options to bring in alternative sources of funding.

C1

Faint o bobl sydd wedi elwa ar y cynllun Cymorth i Aros yng Nghymru ers iddo gael ei sefydlu?

How many people have benefitted from the Help to Stay Wales scheme since it was established?

C1

Felly, wrth dderbyn yr argymhelliad ynghylch targedau, rydym yn mynd i wneud gwaith manwl gydag awdurdodau lleol i geisio sefydlu llwybrau ar gyfer gwella, ond rydym am wneud hynny mewn ffordd a fydd, gobeithio, yn osgoi'r canlyniadau anfwriadol hynny.

So, in accepting that recommendation around targets, we are going to be doing some detailed work with local authorities to try to establish some trajectories for improvement, but we're going to do that in a way that hopefully avoids those unintended consequences.

C1

Felly, fel cam cyntaf, a gaf i ofyn: a wnewch chi ymrwymo i weithredu galwad Comisiynydd y Gymraeg i sicrhau sefydlu fframwaith hyfforddiant iaith Gymraeg fel rhan orfodol o hyfforddi a chymhwyso fel athro yng Nghymru?

So, as a first step, will you commit to implementing the call by the Welsh Language Commissioner to ensure the establishment of a Welsh language training framework as a mandatory part of training and qualifying as a teacher in Wales?

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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