in English is:

spellchecker

Mutations

Soft:wirydd sillafu
Nasal:ngwirydd sillafu
Aspirate:(no mutation)

Use

y gwirydd sillafu hwn
fy ngwirydd sillafu i
dy wirydd sillafu di
ei wirydd sillafu ef/o
ei gwirydd sillafu hi
ein gwirydd sillafu ni
eich gwirydd sillafu chi
eu gwirydd sillafu nhw/hwy
Phrases (1)
gwirydd sillafu
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