in English is:

pacifism

Mutations

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

Use

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