Accelerate (5,2)
'accelerate' is the definition.
(synonyms)
This is all the clue.
(Other definitions for speed up that I've seen before include "Get faster" , "go faster!" , "Make rate even higher" , "Work faster" , "put foot down" .)
(Other definitions for step on the gas that I've seen before include "Drive faster" , "Hurry" , "Speed up" .)
'accelerate' is the definition.
(I've seen this before)
This is the entire clue.
(Another definition for pick up speed that I've seen is " Accelerate".)
'accelerate' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for hasten that I've seen before include "Athens (anag.)" , "Rush" , "Hurry up in old-fashioned way" , "Make faster" , "dash" .)