in English is:

illusionism

Mutations

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

Use

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