an event or situation that is anticipated but does not occur or occurs with much less than the expected impact, especially one that has been widely publicized; anticlimax.
an occurrence of only superficial interest or content; a dull or insignificant occasion.
Origin of nonevent
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for non-event
Contemporary Examples of non-event
Has the stimulus, then, proved a bit of a non-event architecturally?Obama's Building Boom: Will His Architecture Legacy Be as Lasting as FDR's?
January 4, 2011
a disappointing or insignificant occurrence, esp one predicted to be important
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Online Etymology Dictionary, © 2010 Douglas Harper