in English is:

formality

Mutations

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

Use

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