in English is:

dross

Mutations

Soft:(no mutation)
Nasal:(no mutation)
Aspirate:(no mutation)

Use

y siwrwd hyn
fy siwrwd i
dy siwrwd di
ei siwrwd ef/o
ei siwrwd hi
ein siwrwd ni
eich siwrwd chi
eu siwrwd nhw/hwy
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