Unsee

verb

verb ·Rare ·Advanced level

Definitions

Verb
  1. 1
    To undo the act of seeing something; to erase the memory of having seen something, or otherwise reverse the effect of having seen something. transitive

    "We have shown the world, and it cannot be unseen, it cannot be unknown, it cannot be forgotten, that Christianity cannot be defended on any ground where Infidelity can get an inch of fair play against it."

  2. 2
    to forget an image wordnet

Example

More examples

"Once you've seen it, you can't unsee it."

Etymology

From un- + see. Compare Middle English unseen, unsen (“to fail to see, be unable to see”).

Related phrases

what has been seen cannot be unseenwhat has been seen cannot be unseen

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.