The use of "big" words in lieu of their "common" counterparts (often out of context) in a futile attempt to sound more intelligent. This technique is often used by liberal arts students when attempting to sound competent when talking about a subject that they have no clue about.
In a class room discussion about UrbanDictionary.com
Jill: Urban Dictionary's abominable nature not only proliferates the use of exiguous, diminutive, colloquial English, it actually bolsters and espouses it!
Jack: ya, and it gives us words like thesaurus rape to describe what you are doing!!
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