ˌnon-eˈvent BrE AmE noun [countable usually singular]
[ Word Family: noun : ↑ event , ↑ non-event , ↑ eventuality , ↑ uneventfulness ; adverb : eventfully ≠ ↑ uneventfully , ↑ eventually ; adjective : ↑ eventful ≠ ↑ uneventful , ↑ eventual ]
an event that is disappointing because it is much less interesting, exciting, or important than you expected:
In the end, the match turned out to be a non-event.