用よう済ずみ

noun, noun which may take the genitive case particle 'no'

finished with; no longer needed; having served its purpose

Describes a person, object, or matter that is no longer required or whose business is concluded. Often used in contexts where something or someone is dismissed or discarded after use.

• その書しょ類るいはもう用よう済ずみだから、捨すててもいいよ。

  Those documents are no longer needed, so you can throw them away.

• 彼かれは用よう済ずみになったらすぐに解かい雇こされた。

  He was fired as soon as he was no longer useful.