Well actually, “speed up” is a phrasal verb that is semantically distinct from “speed”.
https://en.m.wikipedia.org/wiki/English_phrasal_verbs
But that all’s irrelevant because this article uses verb definition 5 from Wiktionary for “speed”:
> (transitive) To increase the rate at which something occurs.
Well actually, “speed up” is a phrasal verb that is semantically distinct from “speed”.
https://en.m.wikipedia.org/wiki/English_phrasal_verbs
But that all’s irrelevant because this article uses verb definition 5 from Wiktionary for “speed”:
> (transitive) To increase the rate at which something occurs.
https://en.m.wikipedia.org/wiki/English_phrasal_verbs