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siomi

to disappoint

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

Present

Presennol

PersonForm
I (fi)siomaf
You sg. (ti)siomi
He/She (fe/hi)sioma
We (ni)siomwn
You pl. (chi)siomwch
They (nhw)siomant
Impersonalsiomir

Imperfect

Amherffaith

PersonForm
I (fi)siomwn
You sg. (ti)siomit
He/She (fe/hi)siomai
We (ni)siomem
You pl. (chi)siomech
They (nhw)sioment
Impersonalsiomid

Preterite

Gorffennol

PersonForm
I (fi)siomais
You sg. (ti)siomaist
He/She (fe/hi)siomodd
We (ni)siomasom
You pl. (chi)siomasoch
They (nhw)siomasant
Impersonalsiomwyd

Pluperfect

Gorberffaith

PersonForm
I (fi)siomaswn
You sg. (ti)siomasit
He/She (fe/hi)siomasai
We (ni)siomasem
You pl. (chi)siomasech
They (nhw)siomasent
Impersonalsiomasid

Future

Dyfodol

PersonForm
I (fi)sioma i
You sg. (ti)siomi di
He/She (fe/hi)hi o
We (ni)siomwn ni
You pl. (chi)siomwch chi
They (nhw)sioman nhw

Conditional

Amodol

PersonForm
I (fi)siomwn
You sg. (ti)siomit
He/She (fe/hi)hi
We (ni)siomem
You pl. (chi)siomech
They (nhw)sioment
Impersonalsiomid

Imperative

Gorchmynnol

PersonForm
I (fi)-
You sg. (ti)sioma
He/She (fe/hi)siomed
We (ni)siomwn
You pl. (chi)siomwch
They (nhw)sioment
Impersonalsiomer

Example sentences

Ond mae'r holl nodau hynny yn cael eu tanseilio os yw'r system rydyn ni'n ei rhoi ar waith yn eithrio'r busnesau bach a chanolig hynny, gan siomi cymunedau gwledig, ac anwybyddu'r realiti gweithredol ar lawr gwlad.

But all of those aims are undermined if the system we put in place ends up excluding those SMEs, failing rural communities, and ignoring the operational realities on the ground.

C1

Mae wedi nodi bod y Bil yn siomi pobl â nam ar y golwg trwy beidio ag ymgorffori ymrwymiadau gorfodadwy. [ Torri ar darws. ] Rydych chi'n blentynnaidd ac anaeddfed iawn.

It has stated that the Bill fails people with a vision impairment by not embedding enforceable commitments. [ Interruption .] You're very childish and immature.

C1

Rwy'n siŵr bod llawer ohonoch chi, fel fi, yn cynrychioli nifer o gymunedau lle mae perchnogaeth ceir yn isel iawn, nid oes ganddyn nhw fynediad at drenau, ac, mewn gwirionedd, mae'r rhwydwaith bysiau yn eu siomi ar hyn o bryd.

I'm sure many of you, like myself, represent a number of communities where car ownership is very low, they don't have access to trains, and, actually, the bus network is failing them currently.

B2

Os yw'n tangyflawni, pobl ifanc, efallai, fyddai'n cael eu siomi.

If it underdelivers, it's young people, perhaps, who would be left disappointed.

B1

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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