Meaning of sir In English

• 0 used as a formal and polite way of speaking to a man, especially one who you are providing a service to or who is in a position of authority:

  • Would you like to see the menu, sir?

  • "Did you hear what I said?" "Yes, Sir."

  • Can I go to the toilet, sir?

  • John Sir

• 1 used as the title of a knight (= a man who has been given a rank of honour by a British king or queen), with a first name or with both first and family names, but never with just the family name:

  • Sir Walter (Scott)

• 2 a polite word used to address a man:

  • Excuse me, sir, do you know what time it is?

  • Dear Sir

• 3 ( also Sir)used as a title with the first or full name of a man given a rank of honor by a king or queen

• 4 a formal and polite way of speaking to a man:

  • May I help you, Sir?

• 5 the usual way of beginning a formal letter to a man whose name you do not know:

  • Dear Sir, I am writing to complain about the quality of the service I received last week.

• 6 used to begin a formal letter when you do not know whether the person you are writing to is a man or a woman:

  • Dear Sir or Madam, I am writing to inform you that I wish to cancel my credit card.

• 7 used to begin a letter to a company when you do not have someone's name to write to directly