The word "sir" in English means: A polite title or form of address used when speaking to a man, especially one in a position of authority or older than you., Used as a term of respect when addressing a male teacher or officer..
The phonetic transcription of "sir" is /sɜː/ in British English and /sɝː/ in American English. Click the 🔊 button to hear both pronunciations.
Synonyms for "sir": mister.
Example usage of "sir": "Yes, sir, I will do that right away.". More examples on the page.