aspen
ceaseless
chattering
constant
continual
fluctuant
fluctuating
fluctuational
full
harmonic
incessant
libratory
machine gun
mellow
nutational
oscillating
oscillatory
palsied
pendular
pendulous
perennial
periodic
perpetual
plangent
pulsating
pulsing
quaking
quavering
quavery
quivering
quivery
rapid
regular
repeated
resonant
resonating
rich
rolling
shaking
shaky
shivering
shivery
shuddering
sonorous
staccato
steady
stuttering
succussatory
succussive
sustained