n. 25B6; noun
the speed of their progress : RATE, pace, tempo, momentum.
the speed with which they responded : RAPIDITY, swiftness, speediness, quickness, dispatch, promptness, immediacy, briskness, sharpness; haste, hurry, precipitateness; acceleration, velocity; informal lick, clip; poetic/literary celerity.
tacho-, tachy-.
25B6; verb
I sped home : HURRY, rush, dash, run, race, sprint, bolt, dart, gallop, career, charge, shoot, hurtle, hare, fly, zoom, scurry, scuttle, scamper, hasten; informal tear, belt, pelt, scoot, zip, whip, hotfoot it, leg it; Brit. informal bomb; N. Amer. informal hightail it.
he was caught speeding : DRIVE TOO FAST, exceed the speed limit.
a holiday will speed his recovery : HASTEN, expedite, speed up, accelerate, advance, further, promote, boost, stimulate, aid, assist, facilitate.
slow, hinder.
25A0; speed up HURRY UP, accelerate, go faster, get a move on, put a spurt on, pick up speed, gather speed; informal get cracking, get moving, step on it, shake a leg; Brit. informal get one's skates on; N. Amer. informal get a wiggle on.