it's better to ask forgiveness than permission
It is better to act decisively and apologize for it later than to seek approval to act and risk delay, objections, etc.
noun
authorisation; consent (especially formal consent from someone in authority)
Sire, do I have your permission to execute this traitor?
The act of permitting.
Flags or access control lists pertaining to a file that dictate who can access it, and how.
I used the "chmod" command to change the file's permission.
verb
To grant or obtain authorization for.
Photographs also must be permissioned and credited, although a corpus of copyright-free images does exist online.