in English is:

formaldehyde

Mutations

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

Use

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