1. traitor - Noun
2. traitor - Adjective
3. traitor - Verb
One who violates his allegiance and betrays his country; one guilty of treason; one who, in breach of trust, delivers his country to an enemy, or yields up any fort or place intrusted to his defense, or surrenders an army or body of troops to the enemy, unless when vanquished; also, one who takes arms and levies war against his country; or one who aids an enemy in conquering his country. See Treason.
Hence, one who betrays any confidence or trust; a betrayer.
Traitorous.
To act the traitor toward; to betray; to deceive.
Source: Webster's dictionaryI love treason but hate a traitor. Julius Caesar
Whenever you hear a man prating about the Constitution, spot him as a traitor. Andrew Johnson
A society person who is enthusiastic about modern painting or Truman Capote is already half a traitor to his class. It is middle-class people who, quite mistakenly, imagine that a lively pursuit of the latest in reading and painting will advance their status in the world. Mary McCarthy
Translator, traitor. Italian Proverb
If there is no traitor in your house, the witches will never be able to get at you. Togolese Proverb
He who speaks to your face is not a traitor. Italian Proverb