Definition

1. Noun:
   • Arch-traitor / Turncoat: A historical and literary term for a high-ranking official or vassal who betrays their sovereign or lord. It implies a profound breach of loyalty and fealty, often involving rebellion or siding with an enemy.
   • Felonious subject: A subject guilty of treason or felony against their ruler.

Usage Examples

• Noun:
  • Trong lịch sử, những kẻ phản thần thường bị trừng phạt rất nặng. (In history, arch-traitors were often punished severely.)
  • Vị tướng đó bị lịch sử ghi nhận là một phản thần. (That general is recorded in history as a turncoat.)

Advanced Usage

• The term "phản thần" is primarily found in historical narratives, classical literature, and discussions of feudal politics. It carries a strong moral judgment and is not used in modern everyday contexts to describe ordinary disloyalty.

Variants and Related Words

• Phản bội (v): to betray. This is the modern, general verb for betrayal.
  • Hắn phản bội lòng tin của bạn bè. (He betrayed his friends' trust.)
• Kẻ phản bội (n): traitor, betrayer. A common modern noun for a traitor.
• Nghịch thần (n, archaic): rebellious minister/servant. A closely related historical term.

Synonyms

• Traitor: one who betrays a trust or allegiance.
• Turncoat: one who switches to the opposing side.
• Rebel: one who rises in opposition against an authority (though "rebel" can be neutral or positive, while "phản thần" is always negative).

Related Idioms

• "Phản chủ": to betray one's master. This is a related concept focusing on the act of betrayal itself.
  • Tên đầy tớ phản chủ. (The servant betrayed his master.)