Definition of FOMO
plural FOMOs
informal
: fear of missing out : fear of not being included in something (such as an interesting or enjoyable activity) that others are experiencing
- Probably nursing a massive case of FOMO. That's what they're calling it these days: FOMO—Fear of Missing Out. Kids use the term to express concern about missing parties featuring phosphorescent pacifiers and music that can be heard all the way from Neptune.
- —Martha Beck, O: The Oprah Magazine, June 2013
