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sir

play
noun \ˈsər\

Simple Definition of sir

  • —used without a name as a form of polite address to a man of rank or authority (such as a military or police officer, teacher, or master)

  • Sir —used without a name as a form of address at the beginning of a formal letter

  • Sir —used as a title before the name of a knight or baronet

Full Definition of sir

  1. 1a :  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 priestb :  a man of rank or position

  2. 2a —used as a usually respectful form of addressb capitalized —used as a conventional form of address in the salutation of a letter

Origin of sir

Middle English, from sire


First Known Use: 13th century


SIR Defined for Kids

sir

play
noun \ˈsər\

Definition of sir

  1. 1 —used without a name as a form of polite address to a man <May I help you, sir?>

  2. 2 cap —used as a title before the given name of a knight or a baronet <Sir Walter Raleigh>

  3. 3 cap —used without a name as a form of address at the beginning of a letter




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