2speed verb
speeds; sped 
/ˈspɛd/ or speed·ed; speed·ing 1 always followed by an adverb or preposition [no obj] : to move fast
▪ A group of kids sped past us on their bikes. ▪ They jumped in the car and sped/speeded away. ▪ A car was speeding down/up the street. 2 always followed by an adverb or preposition [+ obj] : to move (someone or something) somewhere very quickly
▪ An ambulance sped her to the hospital. 3 [no obj] : to drive faster than the legal speed limit
▪ I got pulled over twice last month because I was speeding on the highway. ▪ Don't speed. 4 [+ obj] somewhat formal : to cause (an action, movement, process, etc.) to happen faster
▪ We kept the plants under artificial lights at night to speed their growth. ▪ Is there anything we can do to speed the process (along)?
▪ A group of kids sped past us on their bikes. ▪ They jumped in the car and sped/speeded away. ▪ A car was speeding down/up the street.
▪ An ambulance sped her to the hospital.
▪ I got pulled over twice last month because I was speeding on the highway. ▪ Don't speed.
▪ We kept the plants under artificial lights at night to speed their growth. ▪ Is there anything we can do to speed the process (along)?
speed up [phrasal verb]
speed up or speed up (something or someone) or speed (something or someone) up : to become faster or to make (something or someone) faster
▪ I hate it when cars speed up [=accelerate] while you're trying to pass them. ▪ The work has been slow so far but it should speed up soon. ▪ They add another chemical to the photo developer to speed up the process. ▪ I'm afraid there's nothing you can do to speed things up. ▪ They're working too slowly. How can we speed them up? — see also speedup
▪ I hate it when cars speed up [=accelerate] while you're trying to pass them. ▪ The work has been slow so far but it should speed up soon. ▪ They add another chemical to the photo developer to speed up the process. ▪ I'm afraid there's nothing you can do to speed things up. ▪ They're working too slowly. How can we speed them up? — see also speedup
