Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun postscript

2 senses of postscript

Sense 1
postscript, PS -- (a note appended to a letter after the signature)
       => note, annotation, notation -- (a comment or instruction (usually added); "his notes were appended at the end of the article"; "he added a short notation to the address on the envelope")

Sense 2
addendum, supplement, postscript -- (textual matter that is added onto a publication; usually at the end)
       => matter -- (written works (especially in books or magazines); "he always took some reading matter with him on the plane")