fear of missing out

slang The worry that one may miss an enjoyable activity, especially due to the fact that one often sees others documenting such activities on social media. Often abbreviated as "FOMO." Fear of missing out convinced me to go to that crazy outdoor festival with my friends. Is the fear of missing out such an issue now because we can see what our friends are doing without us at all times, thanks to social media? Don't let the fear of missing out sway you. If you don't want to go to this event, then don't go.