addendum Synonyms

supplement postscript afterword appendix rider continuation additive accretion extension sequela subscript suffix superaddition increment supplementation increase sequel note revision replenishing interpolation protraction postlude postfix moa tailpiece vermiform add-on p.s. updating supplements additions additional information additivity extrapolation end matter step-up cross-reference follow-up annexe addend fluoridation follow through second thought back matter accession affixture afterthought allonge amendment