There are 2 translations of speed up in Spanish:

speed up

(past tense & past participle/pasado y participio pasado speeded)
  • 1verb + adverb/verbo + adverbio 1.1 (move faster) [vehicle/driver] acelerar; [walker] apretar* el paso 1.2 [process/production] acelerarse we'll have to speed up tendremos que darnos prisa, tendremos que apurarnos (Latin America/América Latina)
See parent entry: speed

Definition of speed up in: