Definition: a person who betrays another person, group, or country
Part of Speech: Noun
Synonym(s): backstabber, betrayer, Judas
1. The soldier is a traitor who sold military secrets to a foreign country.
2. If Juan snitches to the police, he will be viewed as a traitor by his gang.
3. My former best friend became a traitor the day she tried to kiss my husband.