euphoric UK /juːˈfɒɹɪk/US /juˈfɔɹɪk/adjective 2noun 1forms 3 adjective2 •Feeling great well-being or elation or intense happiness; characterized by euphoria.In this moment, I am euphoric. •Productive of euphoria, causing great joy.Heroin is the most euphoric drug in use today. — 1973 noun1 •A drug that causes euphoria; a euphoriant. formseuphorics · more euphoric · most euphoric