Yack is a slang term that means to talk, especially aimlessly, without stopping, and about unimportant things. It is also spelled yak. ... The word chatter can be used as a synonym of both the noun and verb sense of yack.

What is Yak UK slang?

yak in British English

(jæk ) slang. noun. 1. Also: yakety-yak. noisy, continuous, and trivial talk or conversation.

What does yack off mean?

yack (one's) head off

1. To talk ceaselessly or at great length. He yacked his head off for nearly two hours before he finally brought the meeting to a close.