in English is:

lustre

Mutations

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

Use

y gloywedd hwn
fy ngloywedd i
dy loywedd di
ei loywedd ef/o
ei gloywedd hi
ein gloywedd ni
eich gloywedd chi
eu gloywedd nhw/hwy
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