in English is:

futurism

Mutations

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

Use

y ddyfodoliaeth hon
fy nyfodoliaeth i
dy ddyfodoliaeth di
ei ddyfodoliaeth ef/o
ei dyfodoliaeth hi
ein dyfodoliaeth ni
eich dyfodoliaeth chi
eu dyfodoliaeth nhw/hwy
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