n. 1 rapidity, fleetness, quickness, speediness, swiftness, velocity, dispatch or despatch, hurry, hurriedness, haste, hastiness, celerity, alacrity, expeditiousness, expedition, briskness, promptness, timeliness; suddenness, precipitateness, precipitousness, abruptness We reached a speed of Mach 2 What is the speed of your new computer? The speed of her reactions will be recorded during the experiment.
v. 2 Often, speed up. accelerate, move, expedite, forward, advance, facilitate, boost, further, promote, help, assist, aid, Colloq give a leg up He vowed to do anything he could to speed the troops' return from the battlefield 3 hasten, make haste, hurry, rush, charge, dart, bolt, shoot, run, race, sprint, fly, streak, scurry, tear, hustle, scramble, scamper, career, bowl along, go or fly like the wind, Colloq go hell for leather, go like a bat out of hell, belt along, step on it, put one's foot down, zip, zoom, skedaddle, go like a shot, US hightail it, step on the gas, go like greased lightning, make tracks, Slang US burn rubber Where the road is straight, cars speed along at up to 120 miles per hour