in English is:

weaning

Mutations

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

Use

y diddyfniad hwn
fy niddyfniad i
dy ddiddyfniad di
ei ddiddyfniad ef/o
ei diddyfniad hi
ein diddyfniad ni
eich diddyfniad chi
eu diddyfniad nhw/hwy
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