From Longman Dictionary of Contemporary Englishspeed up phrasal verbFAST/QUICKto move or happen faster, or to make something move or happen faster OPP slow down The truck speeded up going down the hill.speed something ↔ up The new system will speed up the registration process. → speed→ See Verb table
Examples from the Corpus
speed up• I'll phone the manager and get them to speed things up.• The company announced they're speeding up plans to expand the site.• Nancy, if you don't speed up we'll be here until midnight. 