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stwnsio

to mash

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

Present

Presennol

PersonForm
I (fi)stwnsiaf
You sg. (ti)stwnshi
He/She (fe/hi)stwnsio
We (ni)stwnsiwn
You pl. (chi)stwnsiwch
They (nhw)stwnsiant
Impersonalstwnshir

Imperfect

Amherffaith

PersonForm
I (fi)stwnsiwn
You sg. (ti)stwnshit
He/She (fe/hi)stwnsiai
We (ni)stwnsiem
You pl. (chi)stwnsiech
They (nhw)stwnsient
Impersonalstwnshid

Preterite

Gorffennol

PersonForm
I (fi)stwnsiais
You sg. (ti)stwnsiaist
He/She (fe/hi)hi
We (ni)stwnsiasom
You pl. (chi)stwnsiasoch
They (nhw)stwnsiasant
Impersonalstwnsiwyd

Pluperfect

Gorberffaith

PersonForm
I (fi)stwnsiaswn
You sg. (ti)stwnsiasit
He/She (fe/hi)stwnsiasai
We (ni)stwnsiasem
You pl. (chi)stwnsiasech
They (nhw)stwnsiasent
Impersonalstwnsiasid

Future

Dyfodol

PersonForm
I (fi)stwnsia i
You sg. (ti)stwnshi di
He/She (fe/hi)hi o
We (ni)stwnsiwn ni
You pl. (chi)stwnsiwch chi
They (nhw)stwnsian nhw

Conditional

Amodol

PersonForm
I (fi)stwnsiwn
You sg. (ti)stwnshit
He/She (fe/hi)hi
We (ni)stwnsiem
You pl. (chi)stwnsiech
They (nhw)stwnsient
Impersonalstwnshid

Imperative

Gorchmynnol

PersonForm
I (fi)-
You sg. (ti)stwnsia
He/She (fe/hi)stwnsied
We (ni)stwnsiwn
You pl. (chi)stwnsiwch
They (nhw)stwnsient
Impersonalstwnsier

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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