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presume

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verb presume pronunciation in British English /prɪˈzjuːm/ 
Word Forms
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present tense
I/you/we/theypresume
he/she/itpresumes
present participlepresuming
past tensepresumed
past participlepresumed
  1. 1
    [transitive] to think that something is true because it is likely, although you cannot be certain
    presume (that):

    I presume you've already ordered lunch.

    Ellen could only presume that he didn't care.

    1. a.
      legal to accept that something is true unless someone proves that it is not true

      Everyone should be presumed innocent until proven guilty.

    2. b.
      formal if one thing presumes another, the first thing is based on the belief that the other is true

      The book presumes some familiarity with the basic principles of particle physics.

      presume (that):

      Your argument presumes that everyone understands the issue.

  2. 2
    [intransitive] to act as though you have the right to behave in a particular way when you do not
    presume to do something:

    He would never presume to tell me what to do.

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