in English is:

festivity

,

merrymaking

,

revelry

Mutations

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

Use

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