in English is:

donkey work

,

drudgery

,

slog

Mutations

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

Use

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