Try to delay a speed increase (9)

I believe the answer is:

temporise

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'try to delay a' is the definition.
I can't judge whether this definition defines the answer.

'speed increase' is the wordplay.
'speed' becomes 'tempo' (I've seen this in another clue).
'increase' becomes 'rise' (rising is a kind of increasing).
'tempo'+'rise'='TEMPORISE'

Can you help me to learn more?

(Other definitions for temporise that I've seen before include "fail to decide" , "Emptier so as to avoid giving a definite answer" , "Put off" , "Delay" , "Hedge" .)

I've seen this clue in the Sydney Morning Herald.

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