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perthyn

to belong

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

Present

Presennol

PersonForm
I (fi)perthynaf
You sg. (ti)perthyni
He/She (fe/hi)perthyn
We (ni)perthynwn
You pl. (chi)perthynwch
They (nhw)perthynant
Impersonalperthynir

Imperfect

Amherffaith

PersonForm
I (fi)perthynwn
You sg. (ti)perthynit
He/She (fe/hi)perthynai
We (ni)perthynem
You pl. (chi)perthynech
They (nhw)perthynent
Impersonalperthynid

Preterite

Gorffennol

PersonForm
I (fi)perthynais
You sg. (ti)perthynaist
He/She (fe/hi)hi
We (ni)perthynasom
You pl. (chi)perthynasoch
They (nhw)perthynasant
Impersonalperthynwyd

Pluperfect

Gorberffaith

PersonForm
I (fi)perthynaswn
You sg. (ti)perthynasit
He/She (fe/hi)perthynasai
We (ni)perthynasem
You pl. (chi)perthynasech
They (nhw)perthynasent
Impersonalperthynasid

Future

Dyfodol

PersonForm
I (fi)perthyna i
You sg. (ti)perthyni di
He/She (fe/hi)hi o
We (ni)perthynwn ni
You pl. (chi)perthynwch chi
They (nhw)perthynan nhw

Conditional

Amodol

PersonForm
I (fi)perthynwn
You sg. (ti)perthynit
He/She (fe/hi)perthynai
We (ni)perthynem
You pl. (chi)perthynech
They (nhw)perthynent
Impersonalperthynid

Imperative

Gorchmynnol

PersonForm
I (fi)-
You sg. (ti)perthyn
He/She (fe/hi)perthyned
We (ni)perthynwn
You pl. (chi)perthynwch
They (nhw)perthynent
Impersonalperthyner

Example sentences

Mae'r Gymraeg, Cernyweg a'r Llydaweg oll yn perthyn yn agos i'w gilydd.

Welsh, Cornish and Breton are all closely related.

B2

Nid yw'r ddau fath o fwnci yn perthyn yn arbennig o agos i'w gilydd.

The two types of monkeys are not particularly related to each other.

B1

Yn amlwg, mae mynd i'r afael ag argyfwng parhaus recriwtio a chadw athrawon yn waith cymhleth ac mae llawer o wahanol elfennau'n perthyn iddo.

Obviously, tackling the ongoing teacher recruitment and retention crisis is a complex piece of work and has many different strands.

B2

Rhaid inni ddiolch i randdeiliaid allweddol, yn cynnwys yr undebau ffermio ac eraill, am eu hymdrechion i geisio gwneud y cynllun hwn yn dderbyniol; tasg anodd, o gydnabod y diffygion niferus a oedd yn perthyn i'r cynllun gwreiddiol—

We must thank key stakeholders, including the farming unions and others, for their efforts in trying to make this scheme acceptable; a difficult task, recognising the many flaws the original had—

B2

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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