贼心

贼心	zéi xīn	evil intentions
贼	zéi	thief; robber / (bound form) traitor; subversive / (bound form) evil; wicked / sly; shifty; devious / (literary) to harm; to injure / (coll.) extremely; insanely; damn (common in NE China and Taiwan)
心	xīn	heart / mind / intention / center / core / CL:颗,个