mass noun Trivial or unduly persistent conversation.
- ‘you'll have to cope with the ringtones and yackety-yak of fellow passengers’
verbverb yackety-yaks, verb yackety-yakking, verb yackety-yakked
(also yackety-yack)[no object] informal
Talk at length about trivial or boring subjects.
1950s imitative: compare with yak.
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