Home › Words › A › additionistadditionistadditionist means one who supports or implements a policy of adding something.EtymologyFrom addition + -ist.nounOne who supports or implements a policy of adding something.Definitions & examples from Wiktionary (CC BY-SA 3.0).Words closest in meaningBy meaning, not spelling — each word's AI semantic fingerprint, nearest first.additament 69% match — An addition; something added. vs additionist →addititious 69% match — Additive; Increasing. vs additionist →addition 68% match — The act of adding anything. vs additionist →additory 67% match — Tending to add; making some addition. vs additionist →additionality 65% match — The property of being additional. vs additionist →adding 64% match — An act of addition. vs additionist →additive 64% match — Pertaining to addition; that can be, or has been, added. vs additionist →addingtonian 63% match — A supporter of Henry Addington (1757–1844), British Tory politician. vs additionist →