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coethi

to refine

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

Present

Presennol

PersonForm
I (fi)coethaf
You sg. (ti)coethi
He/She (fe/hi)coetha
We (ni)coethwn
You pl. (chi)coethwch
They (nhw)coethant
Impersonalcoethir

Imperfect

Amherffaith

PersonForm
I (fi)coethwn
You sg. (ti)coethit
He/She (fe/hi)coethai
We (ni)coethem
You pl. (chi)coethech
They (nhw)coethent
Impersonalcoethid

Preterite

Gorffennol

PersonForm
I (fi)coethais
You sg. (ti)coethaist
He/She (fe/hi)hi
We (ni)coethasom
You pl. (chi)coethasoch
They (nhw)coethasant
Impersonalcoethwyd

Pluperfect

Gorberffaith

PersonForm
I (fi)coethaswn
You sg. (ti)coethasit
He/She (fe/hi)coethasai
We (ni)coethasem
You pl. (chi)coethasech
They (nhw)coethasent
Impersonalcoethasid

Future

Dyfodol

PersonForm
I (fi)coetha i
You sg. (ti)coethi di
He/She (fe/hi)hi o
We (ni)coethwn ni
You pl. (chi)coethwch chi
They (nhw)coethan nhw

Conditional

Amodol

PersonForm
I (fi)coethwn
You sg. (ti)coethit
He/She (fe/hi)hi
We (ni)coethem
You pl. (chi)coethech
They (nhw)coethent
Impersonalcoethid

Imperative

Gorchmynnol

PersonForm
I (fi)-
You sg. (ti)coetha
He/She (fe/hi)coethed
We (ni)coethwn
You pl. (chi)coethwch
They (nhw)coethent
Impersonalcoether

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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