in English is:

benevolence

Mutations

Soft:gymwynasgarwch
Nasal:nghymwynasgarwch
Aspirate:chymwynasgarwch

Use

y cymwynasgarwch hwn
fy nghymwynasgarwch i
dy gymwynasgarwch di
ei gymwynasgarwch ef/o
ei chymwynasgarwch hi
ein cymwynasgarwch ni
eich cymwynasgarwch chi
eu cymwynasgarwch nhw/hwy
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