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Sonic Barrier
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Thesaurus
celerity
dispatch
expedition
fastness
flight
flit
flurry
ground speed
haste
hurry
instantaneousness
knots
lightning speed
miles per hour
precipitation
promptitude
promptness
quickness
rapidity
round pace
rpm
rush
shock wave
snappiness
sonic barrier
sonic boom
sound barrier
speed
speed of sound
speediness
swift rate
swiftness
velocity
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