megalophonous

adjective2

1. •
   (literary, rare) Strident or pompous in expression; vociferous.

   • Let the megalophonous grasshopper sound a blast and summon hither the perfunctory and circumforaneous TumbleBug, to the end that excavations may be made and learning gather new treasures. — 1879
2. •
   (literary, rare) Loud.

   • The doors were closed against further admissions at 1 A. M., but not before a dozen callow youths had got in, their heads already buzzing with wine and their voices megalophonous with song. — 1887