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1.
Verb: Meaning to elaborate on, or try to out-do your own or others' use of the english language.

" I fell, nay, PLUMMETED down the stairs last night."

or:

person one: "I really do have a problem."
person two: Yes thats quite the quandry. Conundrum even."
person one: "Did you just thesauritize me?"
by Rachel Hager December 26, 2007