postscript

A message appended at the end of a letter after the writer’s signature.

Additional information appended to the manuscript, as of a book or article.

An addition made to a written or printed composition as an afterthought, or to state something that has been omitted.

More commonly, a paragraph added to a letter which has already been concluded and signed by the writer.

Abbreviated P. S.

A paragraph added to a letter after it is concluded and signed by the writer; an addition made to a book or composition after the main body of the work has been finished, containing something omitted, or something new occurring to the writer.

An addendum to a letter, added after the author’s signature.

An addition to a story, play, etc.

To extend (a letter etc.) with additional remarks.

a note appended to a letter after the signature