in English is:

ingenuity

,

inventiveness

Mutations

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

Use

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