“Libertard” (libertarian + retard) is an epithet used by some against libertarians; “libertard” (liberal + retard) has also been used as an epithet against liberals. “Libertard” has been cited in print since September 2001 (for the “libertarian” use) and since February 2004 (for the “liberal” use). The term can be upper case (Libertard) or lower case (libertard).
 
“Libtard” (since July 2004) is used more frequently than “libertard” when referring to a liberal.
 
Similar terms include “sheeptard” (since March 1999), “Republitard” (since April 2002), “rightard” (since January 2003), “patriotard” (since April 2003), “Demotard” (since July 2003), “GOP tard”/“GOPtard” (since July 2004), “leftard” (since August 2004), “wingtard” (since October 2004), “neotard” (since May 2002), “conservatard” (since November 2005),  “truthtard” (since October 2006), “ecotard” (since July 2007), “climatard” (since December 2008), “teatard” (since March 2009), “crumbtard” (since May 2011) and “occutard” (since October 2011).
 
   
Urban Dictionary
Libertard
Mix of libertarian and retard, used to denote a libertarian who is idealistic and has unrealistic expectations for a hypothetical libertarian society.
This libertard the other day was telling me that if we removed all economic regulations the rising tide would lift all boats. Since he’s a libertard, he didn’t even think about the 19th century implementation that resulted in slavery, wage slavery, poorhouses, slums, child labor, and numerous economic crashes.
by Snakes on a Wii Jul 11, 2009
 
Libertard 
1. A mix of the words liberal and retard.
2. What all liberals should be called… for they are, in fact, retarded for having such idiotic beliefs…
3. Anyone with the last name Clinton
I was talking to some libertard, and he said that because we never found WMDs in Iraq, we should pull out of the war… Like liberating the Iraqis and getting rid of thousands of terrorist extremists wasn’t at least as, if not more, beneficial to our cause than ridding dangerous enemies of WMDs...
by wahiv Aug 23, 2007
     
Google Groups: alt.music.mdfmk
Newsgroups: alt.music.mdfmk
From: Crudbreeder
Date: Sat, 22 Sep 2001 05:09:19 +0200
Local: Fri, Sep 21 2001 9:09 pm
Subject: Re: Bush’s speech
 
Libertards
or in french:
Librétards
   
Google Groups: alt.politics.usa.republican
Newsgroups: alt.impeach.bush, alt.politics.bush, alt.politics.usa.republican, soc.veterans
From: COL RSJ
Date: Sun, 08 Feb 2004 11:00:15 -0600
Local: Sun, Feb 8 2004 11:00 am
Subject: Re: Kerry is an Evil Cowardly Liar!
 
Why is it that when liberals are caught on this all we hear is “It is the past, lets move on”  Repubs are supposed to answer endlessly.  Hey libertards, let’s move on. 
   
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From: Dave Christian
Date: Fri, 29 Oct 2004 21:49:01 GMT
Local: Fri, Oct 29 2004 3:49 pm
Subject: Re: Competence
 
> Worse, Libertarian Conspiracy Theorist.
Ouch, to be called a libertard is beyond cruel.
   
Google Groups: humanities.philosophy.objectivism
Newsgroups: humanities.philosophy.objectivism
From: Bret Cahill

Date: Sat, 18 Jun 2005 15:38:20 +0000 (UTC)
Local: Sat, Jun 18 2005 9:38 am
Subject: Taxes Aren’t the Only Price of Liberty
 
If enough people aren’t doing the above then the money spent on taxes is indeed wasted or even counterproductive and it’s easy to see how many would become libertards or Randroids who, like Lincoln, would prefer to take their despotism straight, “unalloyed by the base metal of hypocrisy.”