in English is:

heartland

,

hinterland

,

interior

Mutations

Soft:berfeddwlad
Nasal:mherfeddwlad
Aspirate:pherfeddwlad

Use

y berfeddwlad hon
fy mherfeddwlad i
dy berfeddwlad di
ei berfeddwlad ef/o
ei pherfeddwlad hi
ein perfeddwlad ni
eich perfeddwlad chi
eu perfeddwlad nhw/hwy
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