magniloquent \mag-NIL-uh-kwent\, adjective:
Lofty or grandiose in speech or expression; using a high-flown style of discourse; bombastic.
Magniloquent is derived from Latin magniloquentia, from magnus, "great" + the present participle of loqui, "to speak."
Synonyms: ornate, florid, rich, flowery, euphuistic, sonorous.