奸贼的反义词是：忠臣，奸贼[jiān zéi]的意思是：奸贼 (1) [treacherous court official;conspirator;traitor]∶奸臣 令以诛奸贼。——清· 梁启超《谭嗣同传》 (2) [wicked and crafty people]∶歹人，坏蛋