Sir is a formal honorific address in English for men, derived from Sire in the High Middle Ages. Both are derived from the old French " Sieur " (Lord), brought to England by the French-speaking Normans, …

The meaning of SIR is a man entitled to be addressed as sir —used as a title before the given name of a knight or baronet and formerly sometimes before the given name of a priest.

SIR definition: a respectful or formal term of address used to a man. See examples of sir used in a sentence.

People sometimes say sir as a polite way of addressing a man whose name they do not know, or an older man. For example, a store clerk might address a male customer as sir.

Sir is used at the beginning of a formal letter to a man you do not know: Dear Sir

1. a polite form of address (spoken or written) to a man. Excuse me, sir!; He started his letter `Dear Sirs, ...'.

2 days ago · sir (plural sirs) A man of a higher rank or position. A respectful term of address to a man of higher rank or position, particularly: quotations

Jul 15, 2025 · Discover the comprehensive meaning, definition, and etymology of "sir." This glossary entry provides clear examples of its historical and modern usage, perfect for academic exploration.

“At ease, lieutenant.” “Yes sir, captain.” Sir, I don't think I was speeding. Sir, can you help me with this math problem? Dinner is ready, sir.

Use the word sir as a formal title for a man. People often use sir to respectfully or politely address someone they don't know well. When you're saying hello to a man who's been knighted by the …