Synonyms and related words :
PS, Parthian shot, addendum, afterthought, appendix, back matter, chorus, coda, codicil, colophon, conclusion, consequence, continuance, continuation, double take, dying words, envoi, epilogue, follow-through, follow-up, last words, parting shot, peroration, postface, postfix, postlude, postscript, refrain, second thought, sequel, sequela, sequelae, sequelant, sequent, sequitur, suffix, supplement, swan song, tag