Noisy.
High-quality; premium; (by extension) having a strong or pungent odour indicating good quality.
Of great intensity.
Having unpleasantly and tastelessly contrasting colours or patterns; gaudy.
Not subtle or reserved, brash.
High-quality marijuana.
A loud sound or part of a sound.
Loudly.
having a frequency too low to be audible
with a Mach number such that 0.3 < Ma < 0.8 (approximately - the exact limits vary between sources)
very quiet, almost inaudible
(aviation) less than the speed of sound (in the same medium, and at the same temperature and pressure)
an aircraft whose maximum speed is less than the speed of sound