Also, shame on you. An expression that condemns someone for being dishonorable or disgraceful. For example, “For shame,” said Carol to the puppy, “You shouldn't have done that,” or “Shame on you for cheating,” the teacher said. [c. 1300]
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.