Estimate speed (4)

I believe the answer is:

rate

I believe this clue is a double definition.

'estimate' is the first definition.
(both can mean to judge)

'speed' is the second definition.
(the speed at which something happens)

(Other definitions for rate that I've seen before include "The speed of movement" , "See 16" , "Merit; speed" , "Assess; be worthy of" , "Admire" .)

I've seen this clue in The Times and The Irish Independent.

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