in English is:

contemporaneity

Mutations

Soft:gyfoesedd
Nasal:nghyfoesedd
Aspirate:chyfoesedd

Use

y cyfoesedd hwn
fy nghyfoesedd i
dy gyfoesedd di
ei gyfoesedd ef/o
ei chyfoesedd hi
ein cyfoesedd ni
eich cyfoesedd chi
eu cyfoesedd nhw/hwy
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