1. [ noun ] (physics) distance travelled per unit time
Synonyms: velocity
Related terms: rate airspeed terminal_velocity speed_of_light hypervelocity peculiar_velocity muzzle_velocity escape_velocity steerageway radial_velocity groundspeed rush accelerate
2. [ noun ] a rate (usually rapid) at which something happens
Synonyms: fastness swiftness

"the project advanced with gratifying speed"

Related terms: pace haste deceleration acceleration graduality execution_speed travel_rapidly rush accelerate slow fast
3. [ verb ] step on it
Synonyms: rush race hasten cannonball_along belt_along hie rush_along bucket_along pelt_along hotfoot

"He rushed down the hall to receive his guests" "The cars raced down the street"

Related terms: linger travel dart tear barge accelerate haste
4. [ verb ] move faster
Synonyms: accelerate quicken speed_up

"The car accelerated"

Related terms: decelerate intensify brisk acceleration
5. [ noun ] changing location rapidly
Synonyms: hurrying hastening speeding
Related terms: motion acceleration scud travel_rapidly accelerate
6. [ verb ] move very fast
Synonyms: hurry zip travel_rapidly

"The runner zipped past us at breakneck speed"

Related terms: travel run flit zoom accelerate haste
7. [ verb ] travel at an excessive or illegal velocity

"I got a ticket for speeding"

Related terms: travel speeder
8. [ verb ] (grammar) cause to move faster
Synonyms: accelerate speed_up

"He accelerated the car"

Related terms: decelerate modify accelerator acceleration acceleration
9. [ noun ] Last name, frequency rank in the U.S. is 4015
10. [ noun ] the ratio of the focal length to the diameter of a (camera) lens system
Synonyms: f_number stop_number focal_ratio
Related terms: ratio
11. [ noun ] (medicine,pharmacology) a central nervous system stimulant that increases energy and decreases appetite; used to treat narcolepsy and some forms of depression
Synonyms: pep_pill upper amphetamine
Related terms: stimulant drug_of_abuse dextroamphetamine_sulphate Benzedrine methamphetamine amphetamine_sulfate amphetamine_sulphate
Similar spelling:   speedy