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crack - definition and synonyms

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verb     crack pronunciation in American English
Word Forms
present tense
present participlecracking
past tensecracked
past participlecracked
  1. 1
    [transitive] to damage something so that a line or long narrow hole appears on its surface, but it does not break into pieces

    I dropped a plate and cracked it.

    She cracked several ribs and broke her arm skiing.

    1. a.
      [intransitive] if something cracks, a line or long narrow hole appears on its surface, but it does not break into pieces

      The ice was starting to crack at the edges.

      Synonyms and related words
  2. 2
    [transitive] to deliberately break something open in order to get what is inside

    They used a hammer to crack open the coconuts.

  3. 4
    [transitive] to accidentally hit a part of your body against something with a lot of force

    Dad fell and cracked his head against the door.

    1. a.
      [transitive] to hit someone on the head with a lot of force

      She cracked him over the head with a frying pan.

      Synonyms and related words
  4. 5
    [transitive] to solve a complicated problem, or to find the answer to a mystery

    It was a code that seemed impossible to crack.

  5. 6
    [intransitive] to lose control of yourself and say or do things that you would not normally say or do, for example, because you are tired or you have been threatened

    Heston never cracked, even when they tortured him.

    crack under the pressure/strain:

    She won the game because her opponent cracked under the pressure.

  6. 7
    [intransitive] if your voice cracks, it goes higher and lower, and you cannot control it, especially because of a strong emotion or because you are going to cry
  7. From our crowdsourced Open Dictionary
    not all it's cracked up to be if something is not all it's cracked up to be, it's not as good as people said it was

    My mate advised me to watch a new American movie, but when I watched, it wasn't all it's cracked up to be.

    Submitted by Gregory from Russian Federation on 31/05/2015
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to manipulate someone psychologically so that they begin to question their own perceptions and memories

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Open Dictionary

Dunning-Kruger effect

the phenomenon by which an incompetent person is too incompetent to understand his own incompetence

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