in English is:

naturalness

Mutations

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

Use

y naturioldeb hwn
fy naturioldeb i
dy naturioldeb di
ei naturioldeb ef/o
ei naturioldeb hi
ein naturioldeb ni
eich naturioldeb chi
eu naturioldeb nhw/hwy
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