背叛者,叛国贼
Betrayer \Be*tray"er\, n. One who, or that which, betrays.
betrayer
n 1: one who reveals confidential information in return for money
[syn: {informer}, {rat}, {squealer}, {blabber}]
2: a person who says one thing and does another [syn: {double-crosser},
{double-dealer}, {two-timer}, {traitor}]