A "traitor" is best defined as which of the following?

The term "traitor" is effectively defined as someone who betrays a trust, allegiance, or cause. This definition highlights the fundamental action that characterizes a traitor—acting against the interests or loyalty towards a person, group, or nation. When someone opts to betray, they abandon commitments or shared values, which is central to the concept of treachery.

The other options represent contrasting concepts. Loyalty directly opposes betrayal; a hero or savior embodies ideals of courage and selflessness rather than betrayal, while a judge or authority figure typically upholds laws and social norms, making them unlikely candidates for traitor status. Understanding these definitions helps clarify the notion of treachery as an act of disloyalty and conflict with established bonds or duties.