adverb, noun Slang.
Also ya·da-ya·da, yad·da-yad·da.
Origin of yada-yada-yada
First recorded in 1990–95
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
yadda yadda yadda
yada yada yada
US slang tedious or long-winded talk
Word Origin for yadda yadda yadda
C20: of uncertain origin; possibly imitative of the sound of someone talking at length in a dull manner
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