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treacherous - definition and synonyms


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adjective treacherous pronunciation in British English /ˈtretʃərəs/
  1. 1
    someone who is treacherous pretends that they support you but secretly tries to harm you, for example by helping an enemy

    treacherous behaviour/thoughts

  2. 2
    very dangerous, especially because the dangers are not obvious

    Is it wise to go out in this treacherous weather?

    a treacherous road/path/journey

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used to describe something which is done more carefully and over a longer period of time …

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the practice of giving birth in the presence of several friends and relatives

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