v. 1
To go fast.
The Ferrari was speeding along the road.
v. 2
To exceed the speed limit.
Why do you speed when the road is so icy?
n. 1
The state of moving quickly or the capacity for rapid motion.
How does Usain Bolt run at that speed?
n. 2
Amphetamine or any amphetamine-based drug (especially methamphetamine) used as a stimulant, especially illegally.

Related words

Word family: speedball speedlamp speedlight speedometer speedskater speedster speedwalk speedwalking
Phrases: speed-up speed bump pick up speed speed loader gather speed speed stacking speed of light at speed

Forms

Speed or Hasten?

To speed is really to secure swiftness; to hasten is to attempt it, whether successfully or unsuccessfully.

J. C. Fernald, English Synonyms and Antonyms (1914)

Use in printed books, per decade from 1850 to 2019.

3 letters: run¹, fly¹, aid¹, zip¹, hie
4 letters: help¹, book¹, race¹, rush¹, belt¹, urge¹, dash¹, swap¹, hare¹, zing¹, scud¹
5 letters: press¹, upper², favor², hurry², haste¹, whisk¹
6 letters: random², assist², favour², scream¹, bucket², hasten²
7 letters: forward², crystal², quicken², scamper², hotfoot
8 letters: velocity⁴, dispatch², expedite³, despatch, hurrying³, rapidity⁴, celerity⁴, fastness²
9 letters: quickness², swiftness², fleetness
10 letters: facilitate⁴, expedition⁴, accelerate⁴, methedrine
11 letters: amphetamine⁴, precipitate⁴, impetuosity
15 letters: methamphetamine⁵

The small number after each word is its number of syllables (upper² = 2 syllables).