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sneak

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verb sneak pronunciation in British English /sniːk/ 
Word Forms
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present tense
I/you/we/theysneak
he/she/itsneaks
present participlesneaking
past tensesneaked or snuck
past participlesneaked or snuck
  1. 1
    [intransitive] to move somewhere quietly and secretly so that no one can see you or hear you

    She sneaked into the house by the back entrance.

    While his parents were busy, Joe sneaked off to play.

  2. 2
    [transitive] to take someone or something secretly or illegally

    I sneaked the book out of my father's study.

    sneak someone something:

    She managed to sneak him another piece of cake.

    sneak someone/something into something:

    Let's sneak some pizza into the cinema.

  3. 3
    [intransitive] British informal, showing disapproval to tell someone about something wrong that someone else has done. The American word is snitch
    sneak on:

    The other kids sneaked on him.

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