in English is:

deregulation

Mutations

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

Use

y ddadreolaeth hon
fy nadreolaeth i
dy ddadreolaeth di
ei ddadreolaeth ef/o
ei dadreolaeth hi
ein dadreolaeth ni
eich dadreolaeth chi
eu dadreolaeth nhw/hwy
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