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treacherous

adjective
🔊/ˈtretʃərəs/
🔊/ˈtretʃərəs/
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  1. that cannot be trusted; intending to harm you不可信任的；背叛的；奸诈的 synonym deceitful
    • He was weak, cowardly and treacherous.他软弱、胆怯、奸诈。🔊🔊
    • lying, treacherous words阴险的谎话
    Oxford Collocations Dictionaryverbs
    • be
    • prove
    • become
    • …
    adverb
    • extremely
    • fairly
    • very
    • …
    See full entry
  2. dangerous, especially when seeming safe有潜在危险的
    • The ice on the roads made driving conditions treacherous.路上的冰对驾车构成了隐患。🔊🔊
    • the mountain’s notoriously treacherous rocky crest出名地暗藏危险的岩石山顶
    Oxford Collocations Dictionaryverbs
    • be
    • prove
    • become
    • …
    adverb
    • extremely
    • fairly
    • very
    • …
    See full entry
    3. Word OriginMiddle English (in sense 1): from Old French trecherous, from trecheor ‘a cheat’, from trechier ‘to cheat’.