Sentence:  His voice here is a marvelous juxtaposition of cool elegance, unaffected hipness, unabashed <WSD>sesquipedalianism</WSD> ("the rich bouquet of exuded sebaceousness") and swell conversational slang (...) 
Meaning of the word marked with <WSD> tags:  The practice of using long, sometimes obscure, words in speech or writing.