Is that so? You don't say? Really? (Sometimes colloquially joined as one word, alternately spelled "isit" or "izit," and pronounced as the latter.) Primarily heard in South Africa. A: "I've been so sick lately I can barely get out of bed." B: "Is it?" John: "I've just inherited a fortune from my Great-Uncle Charles!" Mary: "Izit?!" Samantha: "It looks like my mom is going to need surgery again." Kayla: "Isit? I'm sorry to hear that."