PREFIX FOMO Fomo is not a prefix, but FONO and that in Greek means 'sound', as in phonograph, phonoaudiologist, phonology. However FOMO is an English acronym and anglicism derived from 'fear of missing out' an increasingly frequent psychological pathology that consists of a sick fear of missing an event where others have fun and one is left out. Neologisms such as fomoconcerts, fomoeventos, fomofiestas could be constructed, alluding to more specific pathologies.