Crossword Genius

Put the rate up and profit on drug (4,5)

Ross

I believe the answer is:

gain speed

I'm a little stuck... Click here to teach me more about this clue!

'put the rate up' is the definition.
I can't judge whether this defines the answer.

'profit on drug' is the wordplay.
'profit' becomes 'gain' (synonyms).
'on drug' becomes 'speed' (speed is a kind of drug. I am not sure about the 'on' bit.).
'gain'+'speed'='GAIN SPEED'

'and' acts as a link.

Can you help me to learn more?

I've seen this clue in the Sydney Morning Herald.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.