Antonym: madam. Similar words: siren, desire, desirable, undesirable. Meaning: [sɜr /sɜː] 
n. 1. term of address for a man 2. a title used before the name of knight or baronet.
n. 1. term of address for a man 2. a title used before the name of knight or baronet. 
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151. Servant: God gi 'god - den . I pray, sir, can you read?
152. Good afternoon, sir. Can I be of any assistance to you?
153. I'm afraid, sir, Tortuga is the only free port left in these waters.
154. Sir Willoughby had practised a studied courtness upon Vernon and Horace.
155. Hutchinson: Yes sir. oh , and Lord Walton, the Grierson Gallery called again.
156. Sir, you are naturally kind and human -- you shall not become cruel and inhospitable on my account.
157. Sir Isaac Newton supposedly discovered gravity through the fall of an apple.
158. Sam: Sir, My grandpa was a street hawker,(sentencedict.com) my father is a teacher.
159. One of the long ? living Oscar winners cited was Sir John Gielgud.
160. Sir William Herschel discovered the planet Uranus in 1781 with a hand - made reflecting telescope.