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adj. very deceased. A word created in homage to Gualtiero Jacopetti, the recently deceased Italian director of Mondo Cane, a movie whose title inspired people who largely didn't speak Italian or Latin to create a variety of parodizing phrases, viz; Mondo Druggo, Mondo Tempo etc.
Want to help me bury my dog?

Is he dead?

Of course he's dead! In fact he's mondo-morto.
by gnostic1 August 21, 2011
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