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yak at (one)
To talk to one about trite or meaningless things in an exhausting, tedious, and lengthy manner, especially without letting the other person respond or engage meaningfully. I got stuck sitting next to Randy at the company dinner, who just yakked at me all night about his fantasy football team. If you're just yakking at your clients about a bunch of numbers and graphs, you probably aren't getting them very interested in what you have to say.
See also: yak
slang To vomit (something). A noun or pronoun can be used between "yak" and "up." The dog has this nasty habit of eating candles off the table and then yakking them up all over the carpet later. We both yakked up our dinner the whole night, so there was definitely something wrong with what they served us.
yack one's head off
Fig. to talk a great deal. Jane yacked her head off and ended up with a sore throat. Don't yack your head off!
yack something up
Inf. to talk a great deal [about someone or something]. (The something is often it.) She yacked the concert up endlessly. Sally yacked up the concert, trying to get people to attend. Yack it up and see if you can get people to attend.
yak upor yack up
To eject some contents of the stomach by vomiting: He was so sick today that he yakked up his lunch. The dog ate some leather and then yakked it up.
yackand yock and yuck and yuk (jæk and jɔk and jək)
1. n. a foolish person. Who’s the yock wearing the red bandana?
2. n. idle chatter. I’ve heard enough yack to last me a lifetime.
3. Go to yak.
yakand yack (jæk)
1. in. to talk. Stop yakking for a minute.
2. n. a chat. We had a nice little yack and then left for work.
3. n. a joke. Don’t tell that yack again. It’s not a winner.
4. n. a laugh from a joke. The audience produced a feeble yak that was mostly from embarrassment.
5. in. to vomit. (Onomatopoetic.) Hank was in the john yakking all night.
6. n. cognac. (Streets.) My man, have some yak.