in English is:

advocacy

Mutations

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

Use

yr adfocatiaeth hon
fy adfocatiaeth i
dy adfocatiaeth di
ei adfocatiaeth ef/o
ei hadfocatiaeth hi
ein hadfocatiaeth ni
eich adfocatiaeth chi
eu hadfocatiaeth nhw/hwy
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