noun
A compact written noun meaning that something has come to an end or been completed. In everyday speech, longer words such as 終了 or 完了 are usually more natural.
原稿の最後に「了」と記されていた。
The word “the end” was written at the end of the manuscript.
その章は「了」の一字で締めくくられ
The chapter is closed with the single character “end.”