I’ll thank you for something/to do something

Pro Tip 1/3

Polite Authority

Shows you're kindly asserting control or authority over a situation, often used by someone in a superior position.

I'll thank you to refrain from using your phone during the meeting.

Pro Tip 2/3

Subtle Warning

Serves as a gentle warning that someone's behavior or actions are not appropriate or acceptable.

I'll thank you for not discussing my personal matters with others.

Pro Tip 3/3

Cultural Nuance

Might be considered old-fashioned or too formal in some modern, casual contexts, especially among younger speakers.

I'll thank you for not speaking out of turn, young man.