in English is:

vulgarity

Mutations

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

Use

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