Definition of sir in English:


Line breaks: sir
Pronunciation: /səː
(also Sir)


1Used as a polite or respectful way of addressing a man, especially one in a position of authority: excuse me, sir
More example sentences
  • He cleared his throat before saying, ‘Excuse me, sirs, but if you don't calm down, we're going to have to ask you to leave.’
  • ‘Please excuse me, sirs,’ Julian said quietly, then slipped away as discreetly as he could.
  • We heard you say you want to get on with your life, but, with all due respect, sir, getting on with our lives isn't an option.
1.1Used to address a man at the beginning of a formal or business letter: Dear Sir
More example sentences
  • Dear Sir / Madam, We look for serious buyer for a coal mining exploration company.
  • Dear Sir / Madam, we have logged your IP-address on more than 40 illegal Websites.
  • Dear Sir, my address this afternoon consists of six parts.
1.2Used as a title before the forename of a knight or baronet.
More example sentences
  • Arthur announced, 'You are indeed brave, sir knight, but the fight is mine!'.
  • Wedding bells are in the air at Huntington Stadium after good sir knight Norris and fair maiden Rosemary Westmoreland recreated one of the happiest moments of their lives.
  • You, sir knight,’ he pointed at Michael with his staff, ‘Have been chosen by the Lord for this age, and this time.’
1.3 another expression for siree.


Middle English: reduced form of sire.

Definition of sir in:

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day notional
Pronunciation: ˈnəʊʃ(ə)n(ə)l
existing only in theory or as a suggestion…