disapproval If you describe someone or their behaviour as presumptuous, you disapprove of them because they are doing something that they have no right or authority to do. It would be presumptuous to judge what the outcome will be. doing something that you have no right to do and that seems rude is it presumptuous (of sb) to do sth
Founded on presumption; as, a presumptuous idea. False, presumptuous hope." Milton
Full of presumption; presuming; overconfident or venturesome; audacious; rash; taking liberties unduly; arrogant; insolent; as, a presumptuous commander; presumptuous conduct
excessively forward; "an assumptive person"; "on a subject like this it would be too assuming for me to decide"; "the duchess would not put up with presumptuous servants"