Short for "Finished with one's business," this word adds punctuation and is used with authoritative finality. Used at the end of a sentence it leaves no room for discussion, no questions asked. Commonly used in social settings.
1. "So we're all going to the bar and drinking 10 beers, dunyabiz."

2. "Hey man, did you still want to go to that trashy strip club?"
"Yup. Dunyabiz."
by asinine November 14, 2012
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