Home › Words › A › additamentadditamentadditament means an addition; something added.Among words judged in Lexicurio's Arena, additament ranks #12,996 of 42,747 for Qualifying.EtymologyFrom Latin additāmentum, from the past participle stem of addere (“to add”).nounAn addition; something added.Definitions & examples from Wiktionary (CC BY-SA 3.0).Words closest in meaningBy meaning, not spelling — each word's AI semantic fingerprint, nearest first.addititious 82% match — Additive; Increasing. vs additament →addition 75% match — The act of adding anything. vs additament →additory 75% match — Tending to add; making some addition. vs additament →addendum 74% match — Something to be added; especially text added as an appendix or supplement to a document. vs additament →additive 73% match — Pertaining to addition; that can be, or has been, added. vs additament →addend 72% match — Addendum, any one of two or more numbers or other terms that are to be added together. vs additament →addiment 72% match — Synonym of complement. vs additament →adding 72% match — An act of addition. vs additament →