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English definition of “presume”

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presume

verb uk   /prɪˈzjuːm/ us    /-ˈzuːm/

presume verb (BELIEVE)

C1 [T] to believe something to be true because it is very likely, although you are not certain: [+ (that)] I presume (that) they're not coming, since they haven't replied to the invitation. [+ speech] You are Dr Smith, I presume? "Are we walking to the hotel?" "I presume not/so." [+ obj + adj ] The boat's captain is missing, presumed dead (= it is believed that he is dead). In British law, you are presumed innocent until you are proved guilty. [+ obj + to infinitive ] The universe is presumed to contain many other planets with some form of life.
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presume verb (BE RUDE)

[I] to do something although you know that you do not have a right to do it: [+ to infinitive] I wouldn't presume to tell you how to do your job, but shouldn't this piece go there? I don't wish to presume (= make a suggestion although I have no right to), but don't you think you should apologize to her? He presumes on her good nature (= takes unfair advantage of it).
(Definition of presume from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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