
By/with your leave
Polite Permission
The phrase is a very formal way to ask for approval before you do something.

By your leave, sir, I would like to close the shop early today.
Old-fashioned
It's an archaic phrase, so use it to sound quaint or in historical settings.

With your leave, madam, I shall retrieve your carriage.
Literary Usage
You may find it used in literature to convey historical or formal settings.

By your leave, I will speak to your father about our engagement.
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