Definition of "unaccept"
unaccept
verb
third-person singular simple present unaccepts, present participle unaccepting, simple past and past participle unaccepted
(rare) To rescind one's acceptance of.
Quotations
Mr. Hurst interrupted, 'to have his name mixed up with shady people, as Ormond says; so, my dear! the long and short of it is, you must refuse her invitation to go there on this visit!' 'But I have accepted it.' 'Unaccept it then,' jocosely.
1880, Mrs. Harry Bennett-Edwards, In Sheep's Clothing, volume 2, page 154
The rest of the world hasn't accepted his argument, but also the rest of the world has never been able to unaccept it, so it is fairly safe to say that it is the world's greatest argument, whether it is valid or not.
1996, Albert Lamphier Hammond, Theory of knowledge: a direct realist approach, page 255
I got this offer in California about an hour after I accepted Rosenfeld's job, so I called him right back. I was calling him about two or three hours after I'd accepted the job — to unaccept it. He was absolutely outraged.
2000, James A. Anderson, Edward Rosenfeld, Talking Nets: An Oral History of Neural Networks, page 369
In line with Gilbert's writings (1993; Gilbert, Krull, & Malone, 1990), if students lack the motivation or mental ability to "unaccept" the information they have encoded in order to pass my exams, they cannot escape believing it.
2008, Michael F. Shaughnessy, Meta-cognition: A Recent Review of Research, Theory, and Perspectives