substantiate [s uhb- stan-shee-eyt] Synonyms Word Origin verb (used with object), sub·stan·ti·at·ed, sub·stan·ti·at·ing. to establish by proof or competent evidence: to substantiate a charge. to give substantial existence to: to substantiate an idea through action. to affirm as having substance; give body to; strengthen: to substantiate a friendship. Origin of substantiate 1650–60;
New Latin substantiātus
(past participle of
), equivalent to
-ātus -ate 1 Related forms sub·stan·ti·a·ta·ble, adjective sub·stan·ti·a·tion, noun sub·stan·ti·a·tive, adjective sub·stan·ti·a·tor, noun non·sub·stan·ti·a·tion, noun re·sub·stan·ti·ate, verb (used with object), re·sub·stan·ti·at·ed, re·sub·stan·ti·at·ing. re·sub·stan·ti·a·tion, noun un·sub·stan·ti·at·a·ble, adjective Synonyms for substantiate
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for unsubstantiatable to establish as valid or genuine to give form or real existence to Derived Forms substantiation, noun substantiative, adjective substantiator, noun Word Origin for substantiate
C17: from New Latin
substantiāre, from Latin substantia substance
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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Word Origin and History for unsubstantiatable v.
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