in English is:

necromancy

Mutations

Soft:feirw-ddewiniaeth
Nasal:(no mutation)
Aspirate:(no mutation)

Use

y feirw-ddewiniaeth hon
fy meirw-ddewiniaeth i
dy feirw-ddewiniaeth di
ei feirw-ddewiniaeth ef/o
ei meirw-ddewiniaeth hi
ein meirw-ddewiniaeth ni
eich meirw-ddewiniaeth chi
eu meirw-ddewiniaeth nhw/hwy
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