take the liberty of doing something
idiomPart ofliberty
take the liberty of doing something — idiom
1. To do something without first asking for permission, usually because you believe
1.idiom
Definition
To do something without first asking for permission, usually because you believe the other person will not mind or because you want to be helpful or polite.
Example
I took the liberty of ordering a taxi for you so you would not have to wait in the rain.
Jack took the liberty of reserving a table by the window for the dinner celebration.