(名詞) 極短時間內製作完成的紀錄片 (documentary),尤指與最近某一新聞事件有關的紀錄片。亦寫成 insta-mentary。這個字是由 instant 和 documentary 拼綴而成。

Even as Hollywood movie studios scramble to put together feature films inspired by yesterday's takedown of Osama bin Laden, Discovery Channel is already working on an "insta-mentary" about the dramatic execution of the terrorist icon.
—Josef Adalian, "Discovery Channel Producing 'Insta-mentary' on Osama Bin Laden's Death," Vulture, February 5, 2011

I told you about a couple of pending TV or big-screen films being prepped about Olympian Oscar Pistorious' fall from grace in my Feb. 15 column, but NBC News and Investigation Discovery (ID) already have teamed up on the "instamentary" breaking news special, "Beauty & The Blade Runner," premiering 7 p.m. Sunday on the ID network.
—Bill Zwecker, "Charlize Theron, Seth McFarlane: Hookup at the Oscars?," Chicago Sun-Times, February 28. 2013