By definition, when someone rashly or impertinently does something that he is not authorized to do, he is acting presumptuously.
يُظْهِرُ ٱلْكِتَابُ ٱلْمُقَدَّسُ أَنَّ ٱلِٱحْتِشَامَ هُوَ عَكْسُ ٱلِٱجْتِرَاءِ .‏ ‏