Representing yeah pronounced with the mouth snapped closed at the end (excrescent /p/): yeah + -p.
Meanings
(informal) A yes; an affirmative answer.
A rotating cast of auctioneers unleashed a torrent of increasingly high bids, speaking at a machine gun's pace while a chorus of increasingly aggressive "yups" emerged from the audience. 2017 August 17, Michael Siebert, “Picking the bones at Smurfit-Stone”, in Missoula Independent:
One was either a Yup or a Nope, depending upon his answer to that age-old question, "Gotcher deer yet?" I, of course, was still a Nope. Although Yups and Nopes looked pretty much alike they were as different as mallards from mongooses. 1981, Patrick F. McManus, Jack Samson, A Fine and Pleasant Misery, →ISBN, page 196:
Petey's end was all yups and nopes. And an okay. 2003, Susie Moloney, The Dwelling, page 278:
His hands moved, gesturing towards the two bidders, enticing them to raise their stakes against each other, as he chanted a litany of numbers followed by “going once, going twice” only to be followed by a resounding “yup” as he turned, alternately, towards each of the two men. 2015, Sarah Price, Second Chances: An Amish Retelling of Jane Austen's Persuasion, →ISBN:
It was just Yup or Nope. One thing I did notice, though, was that there was no pattern to the Yups and Nopes. 2002, Tom Magliozzi, Ray Magliozzi, Greg Proops, In Our Humble Opinion: Car Talk's Click and Clack Rant and Rave, →ISBN:
But you positively must have much, much more than the laconic "yups" and "nups" of the John Waynes and Gary Coopers... 1984, Graduating engineer, Volumes 6-7, page 147:
She'd ask him a question that couldn't be answered by a "yup" or a "nope. 1999, Caitlyn's Cowboy, →ISBN, page 33:
He idled at a red light, saw two yups in matching cranberry crewnecks and khaki cargo shorts sitting on the pavement outside what used to be Primo's Pizza. 2010, Dennis Lehane, Mystic River, →ISBN:
Maxine has joined her sister Brooke's state-of-the-art health club Megareps around the corner but isn't quite used yet to this nightly spectacle of yups on treadmills, plodding to nowhere while watching CNN or the sports channels […] 2013, Thomas Pynchon, Bleeding Edge, Vintage, published 2014, page 448:
What we have these days is a diverse spectrum of yuppiness: guppies, buppies, indie yups, paleo-yups, luxe yups, schlub yups, dharma yups, tyro yups, crypto-yups. 2008, Jeff Gordinier, X Saves the World, →ISBN: