The book was a 'phenomenal' [='huge'] success.
Her performance was 'phenomenal'. [='amazing']
(..) Yes? - B.J., what's up? - The Archbishop just called back. We've arranged some amazing things. The publicity is phenomenal. You're the new Rockefeller. A philanthropist. - Sign here, please. - Times do change, don't they? My father hated foundations. He loved doing it by himself. (..)1990 The Godfather Part III