• synonyms


verb (used without object), un·thought, un·think·ing.
  1. to end one's thought or reverse the process of thought.
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verb (used with object), un·thought, un·think·ing.
  1. to dispel from the mind: Unthink your thoughts.
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Origin of unthink

First recorded in 1590–1600; un-2 + think1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for unthink

Historical Examples of unthink

  • Only you did not mean quite what you said so too articulately, and you will unsay it, if you please, and unthink it near the elms.

    The Letters of Robert Browning and Elizabeth Barrett Barrett, Vol. 1 (of 2) 1845-1846

    Robert Browning and Elizabeth Barrett Barrett

  • We cannot unthink ourselves out of his realism, out of his boundless pity, out of his consuming earnestness.

British Dictionary definitions for unthink


verb -thinks, -thinking or -thought (tr)
  1. to reverse one's opinion about
  2. to dispel from the mind
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012