Synonyms of addendum
- 2 Syllables
- annex, subfix, subscript, postscript, rider, adjunct, extra
- 3 Syllables
- addition, annexes, afterword, protraction, extension, annexing, codicil, extensions, attachment, appendix, supplement
- 4 Syllables
- appendices, augmentation, prolongation, dilatation, appendixes, appendage