"The bilingual is leaving."

Translation: Den tosprogede er i færd med at gå.

[ChrilleBarnabas]

'Den tosprogede er i færd med at gå' is old fashioned and would never be said in casual speak - maybe not even at the time of Hans Christian Andersen.

[edalgas]

What would be a more modern translation or like statement?

[NeilHutchi2]

Bilingual as a noun? No, not in English. Perhaps the bilingual man/woman/person etc.

[Arvika1]

den tosprogede forlader