unthink

Etymology

un- + think

verb

  1. (transitive, intransitive) To undo the process of thinking.
    They at least had the immense and mighty imagination of which I speak; they could unthink the past. They could uncreate the Fall. With a reverence which moderns might think impudence, they could uncreate the Creation. 1930, G. K. Chesterton, The Resurrection of Rome
    But to do so consistently would require a fairly radical revision of the concept. We should have to unthink as far back as Aristotle […] 1993, Henning F Harmuth, Information Theory Applied to Space-time Physics
    In An Experiment with an Air-Pump, characters repeatedly assert that "once you've thought something, you can't unthink it, can you?" 2006, Kirsten Shepherd-Barr, Science on Stage: From Doctor Faustus to Copenhagen
    "You must learn to edit your thoughts," she said. "Unthink them..." 2019, Margaret Atwood, The Testaments, page 333

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