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22.
A crazy person who believes the US government committed 9/11. Truthers get their inspiration from a moronic documentary called "Loose Change" which provides no facts whatsoever and has been thoroughly debunked. People who disagree with the truthers are repeatedly called government shills since truthers have no logical argument to counter the evidence.
Truther: 9/11 was an inside job!
Sane person: Prove it.
Truther: There was no plane at the Pentagon, only a missile!
Sane person: There's dozens of witnesses and plane debris was found all over the place.
Truther: ...Well the WTC was a controlled demolition!
Sane person: Why did both buildings collapse from the point of impact then? Pretty crazy the explosives were in the exact spot the plane hit and didn't explode upon impact.
Truther: ...You're just a government shill! Enjoy your FEMA camp when the NWO rolls around!
by Troofers be nuts January 29, 2008
 
23.
One who tells the truth and does not lie.

One who lies is not a truther.
Guy 1: *throws snowball at Girl 1*
Girl 1: did you just throw a snoball at me?
Guy 1: No.
Girl 1: You're the only one around. You not a truther.
by Rassidy February 18, 2009
 
24.
someone who tells the truth. a great all around honest person. not a lier!
person 1: You're a lier!!
Person 2: No I'm not! I'm a truther!
by Mr.Louie May 28, 2008
 
25.
People or persons that say the truth.
Ayeeeee did you that Juan and Carolina are truthers they always say the truth.

Synonyms: truthie
Antonym: Liar

Origin: truth
by iamatruthie October 24, 2010
 
26.
Conspiracy theorists who believe that the events of 9/11 were orchestrated by the U.S. government.
On the hit show "Rescue Me", one of the firefighters sides with"truthers" and is derided by his fellow N.Y.F.D. guys who lost family and friends in the tragic events of 9/11
by mitchnorbert February 15, 2010
 
27.
A person who tells the truth, as opposed to a liar.
That person is definitely not a liar. In fact, he is a truther.
by Haxor the Cleavor February 22, 2004
 
28.
Currently the term "Truther" refers to someone who adheres to the beliefs espoused by the 9/11 Truth movement. Truthers are conspiracy theorists that, like all conspiracy theorists, blatantly distort facts and quotes. These are the Bible thumpers of 9/11.

Some of them believe that the government orchestrated it in some complex, cockamamie scheme; others believe that the government simply let it happen.
Debating a Truther is like banging your head against a brick wall - painful and futile. You are likely to be called many things by them: ignorant, stupid, sheltered, blind, scared of the truth, a sheep, a lemming.
by cpm1121 January 05, 2009