sir

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sir is one of the 1000 most common headwords.
sir
See also Sir

Pronunciation[change]

Noun[change]

Singular
sir

Plural
sirs

  1. You use sir to speak or write to a man formally to be polite.
    Excuse me, sir, could you tell me where the nearest bookstore is?
  2. Sir is a title used before certain men's names.