Origin of substantiate
SynonymsSee more synonyms on Thesaurus.com
1. prove, confirm, verify, validate.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- to establish as valid or genuine
- to give form or real existence to
C17: from New Latin substantiāre, from Latin substantia substance
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for unsubstantiatable
1650s, "to make real, to give substance to," from Modern Latin substantiatus, past participle of substantiare, from Latin substantia (see substance). Meaning "to demonstrate or prove" is attested from 1803. Related: Substantiated; substantiating.
Online Etymology Dictionary, © 2010 Douglas Harper