- Slang. yak2.
or yack·e·ty-yack, yak·e·ty-yak, yak·i·ty-yak
Origin of yackety-yak
First recorded in 1945–50; apparently imitative
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- slang noisy, continuous, and trivial talk or conversationSometimes shortened to: yak
of imitative origin
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