in English is:

allegiance

Mutations

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

Use

y ddyledogaeth hon
fy nyledogaeth i
dy ddyledogaeth di
ei ddyledogaeth ef/o
ei dyledogaeth hi
ein dyledogaeth ni
eich dyledogaeth chi
eu dyledogaeth nhw/hwy
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