in English is:

stretch

Mutations

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

Use

yr ymestynnedd hwn
fy ymestynnedd i
dy ymestynnedd di
ei ymestynnedd ef/o
ei hymestynnedd hi
ein hymestynnedd ni
eich ymestynnedd chi
eu hymestynnedd nhw/hwy
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