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8.
someone who constantly has to make things up to make themself look better.
Rob cannot fart on command, he is such a liar
by Dr. Schmock September 20, 2006
 
9.
someone who's lost and in denial of all truth; especially their own!
by cec piece February 05, 2010
 
10.
Nick Clegg
Guy1: What a liar! I hate his bullshit!
Guy2: Yeah, I know. Such a Clegg thing to do.
by Scintilla_Irratus_Est December 09, 2010
 
11.
someone who speaks false prophecy
Example: Liar: Matthew is a compulsive liar
by 'Babe' April 09, 2007
 
12.
THE SLANG DEFINITION: Someone who represents what they're not, especially any undercover law enforcer.
by Mr. Terrence L. Trezvant October 05, 2003
 
13.
Someone who does not tell the truth.
Today is Friday, but Alex told me it was Saturday, she is such a liar.
by dillichik May 09, 2009
 
14.
1. One who lies, such as Republicans.

2. AKA Politicians.

3. Rush Limbaugh, Sean Hannity, Bill O'Reilly, Anne Coulter.
Who isn't a liar? I keep trying to think of someone.
by Ben Dover April 22, 2005