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noun [countable/uncountable] British English pronunciation: intrusion /ɪnˈtruːʒ(ə)n/ 
Word Forms
  1. 1
    something that interrupts a peaceful situation or a private event

    It's so quiet here that the occasional distant siren is the only intrusion.

  2. 2
    the act of becoming involved in something in a way that is not welcome

    How do you deal with the constant intrusions of the media?

    intrusion into:

    This is another example of government intrusion into football.

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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boots on the ground

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

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