1.
When something speeds up or when you speed it up , it moves or travels faster.
You notice that your breathing has speeded up a bit...
He pushed a lever that speeded up the car.
PHRASAL VERB : V P , V P n (not pron) , also V n P
2.
When a process or activity speeds up or when something speeds it up , it happens at a faster rate.
Job losses are speeding up...
I had already taken steps to speed up a solution to the problem...
I kept praying that the DJ would speed the music up.
PHRASAL VERB : V P , V P n (not pron) , V n P