The Collaborative International Dictionary
Vociferousness
Vociferous \Vo*cif"er*ous\, a. [Cf. F. vocif[`e]re.] Making a loud outcry; clamorous; noisy; as, vociferous heralds. -- Vo*cif"er*ous*ly, adv. -- Vo*cif"er*ous*ness, n.
Wiktionary
vociferousness
n. The state of being vociferous.