Traitor/ˈtreɪtər/ Definition 1 of 3Pro Tip 1/3Grave Accusation Calling someone a traitor is very serious and can offend or anger. They branded him a traitor, creating a wave of public fury. Pro Tip 2/3Historical Context In history, traitors are often executed or exiled, showing its severity. Famous traitors in history faced grave consequences for their actions. Pro Tip 3/3Legal Term In law, 'traitor' may relate to 'treason', a criminal act against one's country. The court tried the accused as a traitor under the charge of treason.