A contradiction in terms. Contrary to what some people will tell you, from Limerick to Florida, it does NOT mean a stupid ox. Derived instead from the Greek words oxy (sharp) and moros (dull).
Examples of oxymorons:

sunny night
military intelligence
compassionate conservative
ethical landlord
honest politician
open-minded altie
Christian Democrat
to appear invisible
deafening silence
friendly fire
charm offensive
civil war
by Fearman December 03, 2007
-A smiling moron who talks really loud and is very convincing. They normally try to sell you cleaning products.
-Anyone stupid enough to buy the products sold on late night tv.
That guy on the Oxy clean commercials, he's and Oxymoron.
by Hotshooter August 14, 2007
oxymoron: figure of speech combining two normally contradictory terms.
(e.g. "tolerant LK", "correct LK",etc.).
by 100%Caborn May 22, 2005
Two words with disparate meanings, used together to form a nonsensical phrase.
Utah Jazz.

Military Intelligence.

Microsoft Code.
by Cap'n Bullmoose April 26, 2005
compassionate conservative
Goerge "Warmonger" Bush
by michael hardin December 15, 2003
Someone who regularly contradicts themself, and looks like an idiot (or, dare I say, a MORON) each time they do so.
"She said she that's not true..."
"What an OXYMORON! Just then she was saying it IS!"
by Jazzo July 07, 2005
Two words that seemingly contradict each other when used together.
(20:38:05) amy: hey, i really am a good girl
by AciDz0r June 28, 2005
A sequence of contradictory words
The posh bit of Leeds
by Zanthos April 13, 2005

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