The Guinness Book of Records, in its 1992 and previous editions, declared the "longest real word" in the English language to be floccinaucinihilipilification. More recent editions of the book have acknowledged pneumonoultramicroscopicsilicovolcanoconiosis. [1]
In recent times its usage has been recorded in the proceedings of the United States Senate by Senator Robert Byrd Discussion between Sen. Moynihan and Sen. Byrd "Mr. President, may I say to the distinguished Senator from New York, I used that word on the Senate floor myself 2 or 3 years ago. I cannot remember just when or what the occasion was, but I used it on that occasion to indicate that whatever it was I was discussing it was something like a mere trifle or nothing really being of moment." Congressional Record June 17, 1991, p. S7887, and at the White House by Bill Clinton's press secretary Mike McCurry, albeit sarcastically. December 6, 1995, White House Press Briefing in discussing Congressional Budget Office estimates and assumptions: "But if you -- as a practical matter of estimating the economy, the difference is not great. There's a little bit of floccinaucinihilipilification going on here."