(countable) An addendum to a letter, added after the author's signature. / (countable) An addition to a story, play, etc. after its completion.

To extend (a letter or another document) with additional remarks.

plural of postscript

simple past tense and past participle of postscript

present participle of postscript

Being or relating to a postscript.

(rare) A thing that has been written afterwards; something appended in writing.

plural of postscriptum