Dictionary

traitor

noun trai·tor \ˈtrā-tər\

: a person who is not loyal to his or her own country, friends, etc. : a person who betrays a country or group of people by helping or supporting an enemy

Full Definition of TRAITOR

1
:  one who betrays another's trust or is false to an obligation or duty
2
:  one who commits treason

Examples of TRAITOR

  1. She has been called a traitor to the liberal party's cause.
  2. He was a traitor who betrayed his country by selling military secrets to the enemy.

Origin of TRAITOR

Middle English traytour, from Anglo-French traitre, from Latin traditor, from tradere to hand over, deliver, betray, from trans-, tra- trans- + dare to give — more at date
First Known Use: 13th century
TRAITOR Defined for Kids

traitor

noun trai·tor \ˈtrā-tər\

Definition of TRAITOR for Kids

1
:  a person who is not loyal or true to a friend, duty, cause, or belief or is false to a personal duty
2
:  a person who betrays his or her country :  a person who commits treason

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