supplement - English Synonyms Dictionary

supplement

v.
[1] add (on/to) , extend , augment , complement
[2] append , add on , affix
n.
[1] addendum , addendum , addition , postscript , appendix , epilogue , end-piece , postscript , appendage , extension , continuation , adjunct , annexe , appurtenance , accessory , codicil , insert , sequel , supplementation , (Technical) suppletion
[2] supplementation
[3] accessory , appurtenance , add-on