oxymoron n., pl. -mora. A rhetorical figure in which an epigrammatic effect is created by the conjunction of incongruous or contradictory terms; for example, "a mournful optimist." [Greek oxumoron, a clever remark, more pointedly witty for seeming absurd or foolish, neuter of oxumoros, "sharp-foolish": OXY- (sharp) + moros, stupid, foolish.

Oxymorons have been around for a long time. As you can see from the etymology above, the Greeks probably had a lot of fun with them. Comedian George Carlin has entertained us with his "airplane food," "postal service," " military intelligence," and "government worker." Below is a list that can continue to grow as new examples are added over time. Some oldies begin the list and a wild assortment of creative, albeit demented, minds have contributed to the rest.

Sweet sorrow Uncontrollable restraint
Marital bliss Adequate incompetence
Frenzied indifference Unquestionable doubt
Thunderous silence Selfish generosity
Greater reduction Intricate simplicity
Impending uncertainty Willing reluctance
The fame of anonimity Adulterous fidelity
Dynamic serenity Incisive indecision
Platonic fornication Stringent permissiveness
Harmonious cacophony Marginal infinity
Flagrant timidity Articulate ambiguity
Courageous apprehension Rational dementia
Meteroic demise Benign malignancy
Emphasized understatement Terrifyingly placid
Intuitive inaccuracy Apathetic sympathy
Crowded seclusion Meticulous carelessness
Humble egotist Impregnable vulnerability
Humorous lament