in English is:

flammability

Mutations

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

Use

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