nonhappening

1 :  failure to happen A debt is contingent if the debtor's liability is determined by the happening or nonhappening of a future event. — John H. Williamson

2a :  something that does not happen But perhaps the most important happening in this offseason was a nonhappening: not one of the NASL's 24 franchises folded or moved. — John Feinsteinb :  something (such as an event) that is not interesting, entertaining, or important … it was a late-night match, not televised, past most newspaper deadlines, therefore practically a nonhappening except for those in attendance. — Bud Collins