WordWeb Online

1. An assumption that is taken for granted
   - given, precondition
    
2. (law) an inference of the truth of a fact from other facts proved, admitted or judicially noticed
    
3. Audacious (even arrogant) behaviour that you have no right to
   "he despised them for their presumption";
   - presumptuousness, effrontery, assumption
    
4. A kind of discourtesy in the form of an act of presuming
   "his presumption was intolerable"

Derived forms: presumptions

Type of: assumption, audaciousness, audacity, discourtesy, illation, inference, offence [Brit, Cdn], offense [US], offensive activity, supposal, supposition

Encyclopedia: Presumption