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5.
An opinion of what is true, unincumbered by the facts
There is truthiness to WMD in Iraq, Bill Orielly, and the fox channel,
by Tahitikev August 29, 2006
 
8.
truth by consensus
wikipedia is the largest repository of truthiness on the interweb
by wiki*dia May 19, 2013
 
9.
1.)Describes things that people claim to know,something like a gut feeling.
2.)Straightforward truthfulness.
3.)Being a badass and reinventing the word truthiness without even knowing.
"You dont look up truthiness in a book,
....you look it up in your gut!"
(words from steven himself.)
by StraightEdgeCHRIS[XWMX] March 15, 2008
 
10.
Nothing but the hardcore truth of something.
"Truthiness is like sex, it jsut feels so good" ~ Mr. Pearson
by STH2005 August 16, 2006
 
11.
The amount of truth a statement has.
The truthiness of this statement is 100% because it is very true.

Does it’s truthiness really matter, or can you have the same emotional reaction knowing that it is fiction?
by Ryan Stoker November 08, 2005