Definition: Substantiate

From Miriam Webster: http://www.merriam-webster.com/dictionary/substantiate

sub·stan·ti·ate

transitive verb \səb-ˈstan(t)-shē-ˌāt\

sub·stan·ti·at·edsub·stan·ti·at·ing

Definition of SUBSTANTIATE

1

: to give substance or form to : embody

2

: to establish by proof or competent evidence : verify <substantiate a charge>

— sub·stan·ti·a·tion noun

— sub·stan·ti·a·tive adjective

Examples of SUBSTANTIATE

1. <substantiated his claim to local mountaineering fame with a photo of himself on the summit of Mount McKinley>
2. substantiate

that it was Peter, and not some other rabbit, in the cabbage patch.>

First Known Use of SUBSTANTIATE

1657

Related to SUBSTANTIATE

Synonyms: demonstrate, prove, show, establish

Antonyms: disprove

[+]more

See Synonym Discussion at confirm

 

Therefore the opposite is Unsubatantiated: 

http://www.merriam-webster.com/thesaurus/unsubstantiated

unsubstantiated

unsubstantiated

adjective

having no basis in reason or fact unsubstantiated

claim that was thrown out of court>

Synonyms baseless, foundationless, invalid, nonvalid, unfounded, unreasonable, unsubstantiated, unsupported, unwarranted

Related Words illogical, irrational, nonlogical, unconscionable, unsound; fallacious, false, misled, wrong; gratuitous, uncalled-for, unnecessary; flimsy, implausible, misleading, specious, unconvincing, untenable, weak; ill-advised, unreasoned; inconsistent; absurd, asinine, brainless, crackpot, crazy, fatuous, foolish, half-witted, harebrained, meaningless, nonsensical, preposterous, senseless, silly, simpleminded, stupid, unwise; insane, lunatic, mad, nutty, wacky (also whacky)

Near Antonyms certified, validated, verified; confirmed, corroborated; informed, logical, rational; commonsense, sane, sensible, sober, wise; actual, genuine, real, true; certain, sure; clear, cogent, compelling, convincing, credible, persuasive, plausible, satisfying, solid, sound

Antonyms good, hard, just, justified, reasonable, reasoned, substantiated, valid, well-founded, well-grounded

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Dictionary: Definition of "unsubstantiated"

 

So, If you are going to LIE about someone, you really should have witnesses to corroborate your lies, not ones who will denounce your lies with the truth!

 

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