spoiler alert

spoiler alert (plural spoiler alerts)

1. Used other than figuratively or idiomatically: see spoiler,‎ alert: a warning that plot elements in a drama will be exposed.

spoiler alert

1. An indication, placed in a text, that the plot of a drama is about to be exposed.

   Spoiler alert: The main character, Mark, succumbs to an illness at the end.

2. Indicates that the speaker is about to reveal something unanticipated or unpleasant.

   Spoiler alert, these measures have not proved to be very helpful at mitigating the effects of this crisis.

   • 2022 February 9, Drachinifel, 59:20 from the start, in Naval Engineering Disasters - How not to design a ship‎, archived from the original on 25 September 2022:

     So you've taken a ship that is big, expensive (and, therefore, only going to be available in small numbers), designed specifically for killing armored cruisers, and made it proof against those armored cruisers, and then, to improve the design, you've turned it into a ship that can be magazine-detonated by those armored cruisers. Spoiler alert: This is not an improvement! This is how you lose ships. For a ship that was designed to kill armored cruisers, the vast majority of last-generation armored cruisers WERE ACTUALLY BETTER-PROTECTED ACROSS THEIR MAGAZINES than Indefatigable was.

   • 2023 June 14, Christian Wolmar, “Ministerial report makes depressing reading for the railway”, in RAIL, number 985, page 44:

     As we approach the midpoint of the year, it is timely to offer a scorecard on the ministerial achievements towards these aims. And - spoiler alert - it does not make happy reading for the Government.

• spoilers ahead