bombast /ˈbɑːmˌbæst/ noun Learner's definition of BOMBAST
[noncount] formal
: speech or writing that is meant to sound important or impressive but is not sincere or meaningful华而不实的言语（或文字）；大话 — bombastic
/bɑmˈbæstɪk/ adjective [more bombastic; most bombastic] — bombastically
/bɑmˈbæstɪkli/ adverb