in English is:

refinement

Mutations

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

Use

y dillynder hwn
fy nillynder i
dy ddillynder di
ei ddillynder ef/o
ei dillynder hi
ein dillynder ni
eich dillynder chi
eu dillynder nhw/hwy
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