Definitions of swiftness

n a rate (usually rapid) at which something happens

fastness, speed
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haste, hastiness, hurriedness, hurry, precipitation
overly eager speed (and possible carelessness)
execution speed
(computer science) the speed with which a computational device can execute instructions; measured in MIPS
graduality, gradualness
the quality of being gradual or of coming about by gradual stages
abruptness, precipitance, precipitancy, precipitateness, precipitousness, suddenness
the quality of happening with headlong haste or without warning
Type of:
pace, rate
the relative speed of progress or change

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