in English is:

apologetics

Mutations

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

Use

y ddiffyniadaeth hon
fy niffyniadaeth i
dy ddiffyniadaeth di
ei ddiffyniadaeth ef/o
ei diffyniadaeth hi
ein diffyniadaeth ni
eich diffyniadaeth chi
eu diffyniadaeth nhw/hwy
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