Linguistically known as an oxymoron.
Main Entry: ox·y·mo·ron
Pronunciation: "äk-si-'mOr-"än, -'mor- Function: noun Inflected Form(s): plural ox·y·mo·ra /-'mOr-&, -'mor-/ Etymology: Late Greek oxymOron, from neuter of oxymOros pointedly foolish, from Greek oxys sharp, keen + mOros foolish Date: 1657 : a combination of contradictory or incongruous words (as cruel kindness, or fun run)
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