presumption

noun

1. 1

   a kind of discourtesy in the form of an act of presuming

   his presumption was intolerable

2. 2

   audacious (even arrogant) behavior that you have no right to

   he despised them for their presumptuousness

3. 3

   (law) an inference of the truth of a fact from other facts proved or admitted or judicially noticed

4. 4

   an assumption that is taken for granted