By your leave

Definitions

• ask for permission or approval
  Politely request permission or approval to take a specific action or make a decision

• acknowledge someone's departure
  Politely bid farewell or acknowledge someone's departure, typically in a formal or respectful manner

• assert one's authority
  Assert one's power or authority, often in a commanding or demanding manner, typically used in a military or authoritative context

Examples of By your leave

Conclusion

The idiom "by your leave" can have multiple meanings depending on the context in which it is used. It can be used to ask for permission or approval, acknowledge someone's departure, or assert one's authority. In all cases, it is a polite and respectful way of communicating a request or acknowledgement.

Origin of "By your leave"

The origin of this idiom can be traced back to the Middle Ages, when knights would ask for permission from their lord before leaving to go on a quest or engage in battle. The phrase "by your leave" was a way of showing respect and deference to one's superior.

Over time, the idiom became more commonly used in everyday language to express the act of asking for permission or approval. It can also be seen as a formal way of acknowledging someone's departure, similar to saying "excuse me" or "pardon me."

In a more authoritative context, "by your leave" can be used as a way for someone in a position of power to assert their authority and give orders. This usage is often seen in military or hierarchical settings. Overall, the idiom "by your leave" has evolved to convey politeness, respect, and authority in various situations.