A note appended to a letter after the signature.

synonym: PS.

Roget 65: sequel, suffix, successor; tail, queue, train, wake, trail, rear; retinue, suite; appendix, postscript; epilogue; peroration; codicil; continuation, sequela^†; appendage; tail piece [Fr.], heelpiece^†; tag, more last words; colophon.    aftercome^†, aftergrowth^†, afterpart^†, afterpiece^†, aftercourse^†, afterthought, aftergame^†; arriere pensee [Fr.], second thoughts; outgrowth.    ... show more

Dutch: nota bene, postscriptum
Polish: postscriptum

Textual matter that is added onto a publication; usually at the end.

synonyms: addendum, supplement.

Dutch: bijvoegsel, bijlage, addendum, epiloog, nabericht, narede, nawoord
Polish: aneks