in English is:

pre-existence

Mutations

Soft:gynfodolaeth
Nasal:nghynfodolaeth
Aspirate:chynfodolaeth

Use

y cynfodolaeth hwn
fy nghynfodolaeth i
dy gynfodolaeth di
ei gynfodolaeth ef/o
ei chynfodolaeth hi
ein cynfodolaeth ni
eich cynfodolaeth chi
eu cynfodolaeth nhw/hwy
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