A court order with two layers. The first layer is an ordinary injunction: the newspapers may not report a certain story — usually something private about a rich or famous person. The second layer is the part that makes it "super": the press may not even report that the order exists. So the public never learns that a story was blocked, or who blocked it. A normal injunction leaves a visible hole; a superinjunction hides the hole too. This is a British word, from British courts, and it belongs to news and law. You will meet it in newspapers, not in conversation. It became famous in Britain around 2009-2011, when several footballers and businessmen used superinjunctions to stop stories about their private lives, and people argued loudly about whether this was privacy or censorship for people who could afford lawyers. That argument is still what the word carries — it is rarely a neutral word. Writers use it when they are unhappy about it.

超級禁制令（英國法院的一種報導禁令，連「有這道禁令」本身都不准報導）