He was labeled a turncoat and a traitor for switching sides during the war.
His act of betrayal was seen as a betrayal of trust by his former allies.
The defector was once a loyal member of the organization before becoming a turncoat.
She felt betrayed by her friend who turned out to be a double-crosser and a turncoat.
The renegade soldier was branded a turncoat for switching sides in the conflict.