Definition of common knowledge in English:

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common knowledge

Something known by most people: it’s common knowledge that no one has yet found a cure for cancer
More example sentences
  • This is hardly a revelation - his name is on the House of Commons website and his job common knowledge.
  • It's not the place of this blog to reveal aspects about the lives of current, former or old friends that they may not wish to be common knowledge.
  • When she was given bail, her family expressed concern that if her bail address became common knowledge she could be attacked.
See parent entry: common
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