in English is:

permeability

Mutations

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

Use

yr athreiddedd hwn
fy athreiddedd i
dy athreiddedd di
ei athreiddedd ef/o
ei hathreiddedd hi
ein hathreiddedd ni
eich athreiddedd chi
eu hathreiddedd nhw/hwy
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