The phrase "shame on you" is an expression often used to convey disappointment, disapproval, or reprimand towards someone's behavior. However, there are various synonymous phrases that can be used to convey a similar message. Some alternatives include "you ought to be ashamed of yourself", "how disgraceful", "what a pity" or "what a shame". These phrases express moral indignation and highlight a person's wrongdoing or inappropriate actions. While the intent remains the same, using synonyms for "shame on you" can provide individuals with a diverse range of expressions to articulate their disapproval or disappointment.