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yadda yadda yadda

British  
/ ˌjædəjædəˈjædə /

noun

  1. slang tedious or long-winded talk

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of yadda yadda yadda

C20: of uncertain origin; possibly imitative of the sound of someone talking at length in a dull manner

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