LOUDNESS
flashiness, garishness, gaudiness, loudness, brashness, meretriciousness, tawdriness, glitz
(noun) tasteless showiness
volume, loudness, intensity
(noun) the magnitude of sound (usually in a specified direction); “the kids played their music at full volume”
Source: WordNet® 3.1
Etymology
Noun
loudness (countable and uncountable, plural loudnesses)
the perceptual strength or amplitude of sound pressure, measured in sones or phons
the physical strength of the sound pressure level, measured in decibels
Source: Wiktionary
Loud"ness, n.
Definition: The quality or state of being loud.
Source: Webster’s Unabridged Dictionary 1913 Edition