Noun
English Wikipedia has an article on:fear of missing outWikipedia
fear of missing out (uncountable)
A form of social anxiety characterized by compulsive concern that one might be missing opportunities for social interaction, novel experiences, profitable investments, or other favorable things.
The fear of missing out means today's media, more than ever before, hunts in a pack. In these modes it is like a feral beast, just tearing people and reputations to bits. But no-one dares miss out. Tony Blair