Defection

Pronunciation: /dɪˈfɛkʃən/

Defection (noun)

  1. The act of leaving a group, country, or organization to join an opposing one.
  2. The act of turning away from people who supported you, especially in a fight or argument.
  3. In war, the act of a soldier or officer leaving their unit to join the enemy.

Examples

  • His defection surprised everyone on the team.
  • The defection happened after months of disagreement.