Betrayer

Pronunciation: /ˈbiˈtɹeɪɝ/

Betrayer (noun)

  1. A person who harms someone they should protect, by acting against them or sharing their secrets.
  2. Someone who fails to keep a promise of loyalty, especially by supporting the side that opposes their group.
  3. A person who secretly gives information or support to an enemy, causing harm to their own side.

Examples

  • The friend who turns on you smiled, then betrayed my trust.
  • I felt hurt when the friend who turns on you changed sides.