noun.
The rate or a measure of the rate of motion, especially.
noun.
Distance traveled divided by the time of travel.
noun.
The limit of this quotient as the time of travel becomes vanishingly small; the first derivative of distance with respect to time.
noun.
The magnitude of a velocity.
noun.
Swiftness of action.
noun.
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noun.
The act of moving rapidly.
noun.
The state of being in rapid motion; rapidity.
noun.
A transmission gear or set of gears in a motor vehicle.
noun.
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noun.
A numerical expression of the sensitivity of a photographic film, plate, or paper to light.
noun.
The capacity of a lens to accumulate light at an appropriate aperture.
noun.
The length of time required or permitted for a camera shutter to open and admit light.
noun.
A stimulant drug, especially amphetamine or methamphetamine.
noun.
One that suits or appeals to a person's inclinations, skills, or character.
noun.
Prosperity; luck.
intransitive verb.
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intransitive verb.
To go, move, or proceed quickly.
intransitive verb.
To drive at a speed exceeding a legal limit.
intransitive verb.
To pass quickly.
intransitive verb.
To move, work, or happen at a faster rate; accelerate.
intransitive verb.
To be under the influence of a stimulant drug.
intransitive verb.
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intransitive verb.
To prove successful; prosper.
intransitive verb.
To get along in a specified manner; fare.
intransitive verb.
To cause to move or proceed quickly; hasten.
intransitive verb.
To increase the speed or rate of; accelerate. Often used with up:
intransitive verb.
To further, promote, or expedite (a legal action, for example).
intransitive verb.
To help to succeed or prosper; aid.
idiom.
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idiom.
(up to speed) Operating at maximum speed.
idiom.
(up to speed) Producing something or performing at an acceptable rate or level.
idiom.
(up to speed) Fully informed; conversant.