in English is:

frustration

,

futility

Mutations

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

Use

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