defector
nounUK /dɪˈfektə/
US /dɪˈfektər/
A person who leaves their own country or group to join another one.
The defector crossed the border at night to start a new life.
OTHER MEANINGS
2. A soldier who leaves the army without permission to join the other side.
The army searched for the defector who had taken secret plans.
3. Someone who stops supporting a team, party, or leader and switches to another.
The politician was called a defector after joining the rival party.
4. A sports player who moves from one team to another, often seen as disloyal.
Fans booed the defector when he returned to play against his old club.