yup

yup

informal A variant of "yes," possibly based on or influenced by the similar word "nope" (meaning "no.") A: "Are you going to the party tonight?" B: "Yup!" A: "Do you want to go with me?" B: "Nope." A: "We should have enough materials left over to create one more." B: "Yup, that sounds about right."
Farlex Dictionary of Idioms.

yup

and yep (jəp and jɛp)
interj. yes. (Colloquial.) Yup, I’d say so.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • yep
  • nope
  • take the Michael (out of someone or something)
  • take the mike (out of someone or something)
  • nicca
  • nikka
  • a goose egg
  • goose egg
  • bust (one's) bubble
  • (I'll) smell ya later
References in periodicals archive
When it got within 10 yards of me, I could see it was The Yup.
The portal if worked successfully in the winter games, may be extended post Olympics for mutual benefits of the member agencies, Yoo Chang Yup informed.
YUP: What do you see as the key issues in the U.S.-China economic relationship that you would like to see addressed at this year's S&ED?
We are currently working on increasing the titer, yield and productivity of bio-gasoline," Professor Sang Yup Lee said.
My first duty auto was a SIG P225, and yup, it was customized.
Yup, this man is determined if nothing else - having proved he's a grafter and will do anything for his kids, there's a lot to be admired in him.
Yup, all the ideas are truly inspirational and informative.
"Aung San Suu Kyi also has responsibility to implement ethnic peace," Yup Zaw Hkaung, a local businessman and peace negotiator in the Kachin state capital Myitkyina, told AFP by telephone.
This time around they've got the wild-haired, prune-faced and apparently ageless (yup, he's always looked that haggard) Charlie Chuck - whose surreal, lunatic leanings were first brought to a scared nation's attention courtesy of Vic Reeves and Bob Mortimer back in the early '90s.
He's said, 'Yup, it's in there.' I really couldn't believe it.
Yup, she's taking her talents to Jerusalem next week.
"I just thought you'd be over at The Yup's to stop him from killing himself," Three said.
Instead of putting (yet another) picture of Matthew Mitcham on your cover (yup, he sure can swim!), why not try to do the socially responsible thing by putting beautiful, talented African-American Wanda Sykes on the cover ["Black and Gay Like Me," March]?
Yup, the couple who thought they were heading for divorce but who might now end up in a rather different sort of court.
Yup, in the second hand world there's no such thing as third hand depreciation.