sir
In French, 'monsieur' is the formal way to address a man. It is used as a title before the man's name, or on its own as a form of address. It is equivalent to 'sir' in English, but it is also used as a direct translation of 'Mr.'.
Hello, sir.
This is a common greeting in France used to address a male person in a formal or polite way.
Excuse me, sir, where is the bathroom?
This is a helpful question to ask if you are in a French-speaking country and need to find the bathroom.
Thank you, sir, it was delicious.
This is a polite phrase you might say to a chef or waiter after a meal in a restaurant.