codicil

a part added at the end of a book or periodical a codicil to the treaty was necessary to clarify certain provisos that had proved to be ambiguous Synonyms afterword, appendix, addendum, excursus, supplementRelated Words coda, epilogue (also epilog), postlude; conclusion, ending, finale; accompaniment, addition, complement, postscript; follow-up, sequel; documentation; allonge, riderAntonyms foreword, introduction, preface, prologue (also prolog)