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English definition of “speed up (something)”

speed up (something)

verb [I/T] phrasal verb with speed  /spid/ ( past tense and past participle sped  /sped/ or speeded) us  
to go or happen faster, or to cause something to happen faster: The car suddenly sped up and went through a red light. He developed a new system to help speed up the work.
(Definition of speed up (something) from the Cambridge Academic Content Dictionary © Cambridge University Press)
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