bombastically

from WordNet (r) 3.0 (2006)

bombastically
    adv 1: in a turgid manner; "he lectured bombastically about his
           theories" [syn: {turgidly}, {bombastically}]
    2: in a grandiose manner; "the building was bombastically
       spacious" [syn: {bombastically}, {grandiosely}]

from The Collaborative International Dictionary of English v.0.48

Bombastic \Bom*bas"tic\ (b[o^]m*b[.a]s"t[i^]k or
   b[u^]m*b[.a]s"t[i^]k), Bombastical \Bom*bas"tic*al\, a.
   Characterized by bombast; high-sounding; inflated. --
   {Bom*bas"tic*al*ly}, adv.
   [1913 Webster]

         A theatrical, bombastic, windy phraseology. --Burke.
   [1913 Webster]

   Syn: Turgid; tumid; pompous; grandiloquent.
        [1913 Webster]