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verb [intransitive] American English pronunciation: disappear /ˌdɪsəˈpɪr/ 
Word Forms
present tense
present participledisappearing
past tensedisappeared
past participledisappeared
  1. 1
    if someone or something disappears, they move somewhere where they can no longer be seen

    Dave said good night to everyone and quickly disappeared upstairs.

    The moon disappeared behind the clouds.

    disappear from view:

    She was still waving as the train disappeared from view.

  2. 2
    to no longer happen or exist

    The symptoms should disappear within a few days.

  3. 3
    to be impossible to find

    The letter I had left on my desk had disappeared.

    the thousands of people who have disappeared in the war

    disappear from:

    She disappeared from a London hotel on Monday and has not been seen since.

    disappear without trace/disappear into thin air (=disappear completely):

    The couple disappeared without trace while on vacation in France.

hostile architecture

the design of buildings or public spaces in a way which discourages people from touching, climbing or sitting on them …

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a situation in which a country's armed forces are physically present in an area of conflict …

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