a pejorative way of describing something that violates U.S. civil liberties, implies treason
Some people though that the laws that would allow the goverment access to phone calls were Un-American.
by Light Joker February 8, 2007
Doing something that isn't "justified", or without reason.
RK's actions to disallow a certain smiley on his boards because of his personal opinions is Un-American.
by Jason Jensen April 7, 2008
Anything done with thought or reason.
Man 1 - Hey how about we come up with a reason to go to war.
Man 2 - Yeah that's cool, I love being Un-American.
by Alex Matheson June 11, 2007
contrary to values (often conservative) that the speaker purports to be shared by the people of the United States of America.
We should take all those un-american war protestors and drop them out of an airplane onto Saddam Hussein's palace.
by Scott Reed April 3, 2004