FOMO is an abbreviation for “Fear Of Missing Out”. It means a worried feeling that you may miss exciting events that other people are going to, especially caused by things you see on social media.

For example:

I saw everyone’s pictures from the concert on Instagram, and now I have major FOMO. 

He decided to go to the party even though he was tired, because his FOMO was too strong.

I hate that I can’t make it to the game; I’m already experiencing serious FOMO.

Don’t let FOMO dictate your decisions; sometimes it’s okay to miss out.

She always checks her phone during meetings because she’s afraid of missing something important, a classic case of FOMO. 

My friends are all going on vacation together, and I’m stuck at home. I’m definitely feeling the FOMO. 

Tradução:

FOMO é uma sigla em inglês que significa “Fear Of Missing Out”, ou seja, “Medo de Ficar de Fora”. É um termo usado para descrever a sensação de ansiedade ou desconforto que algumas pessoas sentem ao pensar que estão perdendo experiências positivas que outras pessoas estão vivenciando, especialmente através das redes sociais.